co-authored-by: Max <max@zed.dev>

These methods were slightly different which caused (for example) there
to be no "Discard" option in the conflict case at the workspace level.

To make this work, a new SaveBehavior (::PromptForNewPath) was added to
support SaveAs.

Particularly in development builds (and in tests), when typing in the
command palette, I tend to hit enter before the suggestions have
settled.

In a rare case of "it broke on my machine" I haven't been able to run
the vim tests locally for a few days; turns out I ran out of swap file
names...

This mostly adds the commonly requested set (:wq and friends) and
a few that I use frequently
:<line> to go to a line number
:vsp / :sp to create a split
:cn / :cp to go to diagnostics

Release Notes:

- Restore `cmd-shift-d` as 'editor::DuplicateLine' and move
`editor::SelectAllMatches` to `cmd-shift-L`, like in VS Code. The
previous action for `cmd-shift-l`, `editor::SplitSelectionIntoLines`,
has been moved to the sublime base keymap.
- Fixes a panic when using 'editor::SelectAllMatches'  on an empty line.

This PR fixes several bugs related to channel moving and it's
unintuitive behavior when attempting to re-order channels

Release Notes:

- N/A

Fix drag and drop stale state bug revealed by the channel panel

co-authored-by: Max <max@zed.dev>

* allow replacing with the empty string to delete
* fix <enter> for ReplaceNext (in vim mode)

Release Notes:

- allow replacement to be empty

Made channel linking not query in a loop

co-authored-by: Max <max@zed.dev>

Release Notes:

- Fixed a bug where the 'Open Notes' action in the collaboration panel
context menu didn't work (preview only).

Release Notes:

- vim: fix a panic when using `j` to go beyond end of file

This PR adds an initial set of components to `crates/storybook/src/ui`.

All changes still are contained to inside storybook. Merging to keep up
to date with main.

Enable keyboard shortcuts for Project Search modes, and ensure project
search settings are persisted search to search.

Release Notes:

- Added alt-cmd-s to Toggle Semantic Search Mode
- Added alt-cmd-g to Toggle Regex Search Mode
- Added alt-cmd-x to Toggle Text Search Mode
- Defaulted new project searches to using last used search mode and
settings.

Equivalent to hitting cmd-d as many times as possible

cc: @JosephTLyons this PR needs a bit of work on user-facing naming and
interactions:
- [x] ~~I thought cmd-shift-d would be nice for this action, but that is
already taken by a sublime key binding. Could we use the VSCode binding?
I left the sublime text binding in but commented out.~~ Gonna just leave
it as is
- [x] ~~I went through 'SelectAllMatches' and 'SelectAll' as names for
this action, but ran into conflicts with the buffer search action and
the existing SelectAll (`cmd-a`) action. I decided to go with
`SelectNextAll`, but could use your help here.~~ Decided to go with
'SelectAllMatches'

Release Notes:
- Added a `editor::SelectAllMatches` command, bound to `cmd-shift-d`,
for selecting all matching occurrences under your selection. Note that
this has replaced the previous binding for `editor::DuplicateLine`.