Add Go file icon (#7110)

Derrick Laird created 

![IMG_4664](https://github.com/zed-industries/zed/assets/8725798/75436116-7c7e-4ae6-b76c-13f21c52bee8)

Release Notes:

- Added icon to `.go` files

Change summary

assets/icons/file_icons/file_types.json | 5 ++++-
assets/icons/file_icons/go.svg          | 0 
2 files changed, 4 insertions(+), 1 deletion(-)

Detailed changes

assets/icons/file_icons/file_types.json 🔗 

@@ -39,7 +39,7 @@
         "gitignore": "vcs",
         "gitmodules": "vcs",
         "gitkeep": "vcs",
-        "go": "code",
+        "go": "go",
         "h": "code",
         "handlebars": "code",
         "hbs": "template",
@@ -156,6 +156,9 @@
         "haskell": {
             "icon": "icons/file_icons/haskell.svg"
         },
+        "go": {
+            "icon": "icons/file_icons/go.svg"
+        },
         "image": {
             "icon": "icons/file_icons/image.svg"
         },