git_ui: Show author name on commits in branch picker (#36812)

See related discussion
https://github.com/zed-industries/zed/discussions/36511.

<img alt="zed"
src="https://github.com/user-attachments/assets/da7fc30d-2504-48f4-a392-7c8d5cd8acb1"
/>

Release Notes:

- Added option to show the author name in a branch picker commit
information

---------

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

docs/src/configuring-zed.md

@@ -2023,6 +2023,9 @@ To interpret all `.c` files as C++, files called `MyLockFile` as TOML and files
     "inline_blame": {
       "enabled": true
     },
+    "branch_picker": {
+      "show_author_name": true
+    },
     "hunk_style": "staged_hollow"
   }
 }
@@ -2154,6 +2157,36 @@ Example:
 }
 ```
 
+### Branch Picker
+
+- Description: Configuration related to the branch picker.
+- Setting: `branch_picker`
+- Default:
+
+```json
+{
+  "git": {
+    "branch_picker": {
+      "show_author_name": false
+    }
+  }
+}
+```
+
+**Options**
+
+1. Show the author name in the branch picker:
+
+```json
+{
+  "git": {
+    "branch_picker": {
+      "show_author_name": true
+    }
+  }
+}
+```
+
 ### Hunk Style
 
 - Description: What styling we should use for the diff hunks.