Add Windows support (kinda)

Fixes #5394

Add Windows support for the code editor.

* **Cargo.toml**: Update the `[workspace.dependencies.windows]` section to include necessary features for Windows support. Add additional dependencies required for Windows support.
* **.github/workflows/ci.yml**: Update the `windows_tests` job to run the tests on Windows. Ensure the `windows_tests` job is not commented out.
* **crates/fs/Cargo.toml**: Ensure the `[target.'cfg(target_os = "windows")'.dependencies]` section includes all necessary dependencies for Windows support. Add additional dependencies required for Windows support.
* **crates/gpui/src/platform/windows/util.rs**: Ensure the utility functions are fully implemented. Add additional utility functions required for Windows support.

(Might not work.)
(if it doesnt work, you can fix it, or do changes.)

---

For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/zed-industries/zed/issues/5394?shareId=XXXX-XXXX-XXXX-XXXX).

.github/workflows/ci.yml

@@ -129,11 +129,10 @@ jobs:
       - name: Build Zed
         run: cargo build -p zed
 
-  # todo(windows): Actually run the tests
   windows_tests:
     timeout-minutes: 60
     name: (Windows) Run Clippy and tests
-    runs-on: hosted-windows-1
+    runs-on: windows-latest
     steps:
       - name: Checkout repo
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
@@ -150,6 +149,9 @@ jobs:
         # Windows can't run shell scripts, so we need to use `cargo xtask`.
         run: cargo xtask clippy
 
+      - name: Run tests
+        run: cargo test
+
       - name: Build Zed
         run: cargo build -p zed