port rope2 to zed2

Release Notes:

- NA

This removes a lot of ad-hoc event translation code in the workspace and
replaces it with a GPUI feature and trait bounds.

TODO:
- [x] Proof out idea
- [x] Convert the workspace
- [x] Convert the rest of the app

Release Notes:

- N/A

Remove some debugging from GoToLine

Release Notes:

- N/A

![Screenshot 2023-11-08 at 5 33
10 PM](https://github.com/zed-industries/zed/assets/326587/09efd785-2c43-41b2-9429-c17067497fd2)

![Screenshot 2023-11-08 at 5 33
28 PM](https://github.com/zed-industries/zed/assets/326587/14a9faee-3547-40b6-a31f-16f653cdcb36)

- MODAL
- center a div
- MOAR CODE
- Beautiful go to line modal


Release Notes:
- N/A

Co-authored-by: Marshall <marshall@zed.dev>

Provide element bounds to the input handler's `bounds_for_rect` method.

Co-authored-by: Marshall <marshall@zed.dev>

Co-authored-by: Marshall <marshall@zed.dev>

This also introduces new APIs in `ViewContext` for observing window
focus changes.

Release Notes:

- N/A

[[PR Description]]

Adds documentation to ColorScaleSteps:

```rust
/// Returns the specified step in the [`ColorScale`].
    #[inline]
    pub fn step(&self, step: ColorScaleStep) -> Hsla {
        // Steps are one-based, so we need convert to the zero-based vec index.
        self.0[step.0 - 1]
    }

    /// `Step 1` - Used for main application backgrounds.
    ///
    /// This step provides a neutral base for any overlaying components, ideal for applications' main backdrop or empty spaces such as canvas areas.
    ///
    #[inline]
    pub fn step_1(&self) -> Hsla {
        self.step(ColorScaleStep::ONE)
    }

    /// `Step 2` - Used for both main application backgrounds and subtle component backgrounds.
    ///
    /// Like `Step 1`, this step allows variations in background styles, from striped tables, sidebar backgrounds, to card backgrounds.
    #[inline]
    pub fn step_2(&self) -> Hsla {
        self.step(ColorScaleStep::TWO)
    }

    /// `Step 3` - Used for UI component backgrounds in their normal states.
    ///
    /// This step maintains accessibility by guaranteeing a contrast ratio of 4.5:1 with steps 11 and 12 for text. It could also suit hover states for transparent components.
    #[inline]
    pub fn step_3(&self) -> Hsla {
        self.step(ColorScaleStep::THREE)
    }

    /// `Step 4` - Used for UI component backgrounds in their hover states.
    ///
    /// Also suited for pressed or selected states of components with a transparent background.
    #[inline]
    pub fn step_4(&self) -> Hsla {
        self.step(ColorScaleStep::FOUR)
    }

    /// `Step 5` - Used for UI component backgrounds in their pressed or selected states.
    #[inline]
    pub fn step_5(&self) -> Hsla {
        self.step(ColorScaleStep::FIVE)
    }

    /// `Step 6` - Used for subtle borders on non-interactive components.
    ///
    /// Its usage spans from sidebars' borders, headers' dividers, cards' outlines, to alerts' edges and separators.
    #[inline]
    pub fn step_6(&self) -> Hsla {
        self.step(ColorScaleStep::SIX)
    }

    /// `Step 7` - Used for subtle borders on interactive components.
    ///
    /// This step subtly delineates the boundary of elements users interact with.
    #[inline]
    pub fn step_7(&self) -> Hsla {
        self.step(ColorScaleStep::SEVEN)
    }

    /// `Step 8` - Used for stronger borders on interactive components and focus rings.
    ///
    /// It strengthens the visibility and accessibility of active elements and their focus states.
    #[inline]
    pub fn step_8(&self) -> Hsla {
        self.step(ColorScaleStep::EIGHT)
    }

    /// `Step 9` - Used for solid backgrounds.
    ///
    /// `Step 9` is the most saturated step, having the least mix of white or black.
    ///
    /// Due to its high chroma, `Step 9` is versatile and particularly useful for semantic colors such as
    /// error, warning, and success indicators.
    #[inline]
    pub fn step_9(&self) -> Hsla {
        self.step(ColorScaleStep::NINE)
    }

    /// `Step 10` - Used for hovered or active solid backgrounds, particularly when `Step 9` is their normal state.
    #[inline]
    pub fn step_10(&self) -> Hsla {
        self.step(ColorScaleStep::TEN)
    }

    /// `Step 11` - Used for text and icons requiring low contrast or less emphasis.
    #[inline]
    pub fn step_11(&self) -> Hsla {
        self.step(ColorScaleStep::ELEVEN)
    }

    /// `Step 12` - Used for text and icons requiring high contrast or prominence.
    #[inline]
    pub fn step_12(&self) -> Hsla {
        self.step(ColorScaleStep::TWELVE)
    }
```

Release Notes:

- N/A

[[PR Description]]

- Adds `StyledExt` for Zed-specific methods like `ui_text`, `v_flex`,
etc.
- Updates components previously using `text_*` methods.

Release Notes:

- N/A

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

This PR switches us over to a fork of `ctor` that contains the fixes
from https://github.com/mmastrac/rust-ctor/pull/295, backported to our
current version of `ctor` (v0.1.20).

Once 1) the `ctor` maintainer publishes a new version with that change
and 2) we're ready to upgrade to the latest version of `ctor` we can
switch back to the mainline version.

Release Notes:

- N/A

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

TODO:
- [x] GPUI2: Implement record_backtrace on executor
- [x] GPUI2: Implement rng on executor
- [x] GPUI2: Determine whether to Implement global notifications for
removals
- [x] Get existing tests passing

TODO later:
- [ ] Port: collab_ui and uncomment tests
- [ ] Port: editor and uncomment tests
- [ ] Port: notifications and uncomment tests



Release Notes:

- N/A

This PR pulls the previous/current frame data out of the `Window` and
into a separate `Frame` struct.

Release Notes:

- N/A

Co-authored-by: Nathan <nathan@zed.dev>
Co-authored-by: Piotr <piotr@zed.dev>

Build speed improvification