Use gh workflow for tests (#41384)

Follow up for: #41304

Splits CI tests (cherry-picks and PRs only for now) into separate
workflows using `gh-workflow`. Includes a couple restructures to
- run more things in parallel
- remove our previous shell script based checking to filter tests based
on files changed, instead using the builtin `paths:` workflow filters


Splitting the docs/style/rust tests & checks into separate workflows
means we lose the complete summary showing all the tests in one view,
but it's possible to re-add in the future if we go back to checking what
files changed ourselves or always run everything.

Release Notes:

- N/A *or* Added/Fixed/Improved ...

---------

Co-authored-by: Conrad <conrad@zed.dev>

.github/workflows/ci.yml

@@ -2,16 +2,9 @@ name: CI
 
 on:
   push:
-    branches:
-      - main
-      - "v[0-9]+.[0-9]+.x"
     tags:
       - "v*"
 
-  pull_request:
-    branches:
-      - "**"
-
 concurrency:
   # Allow only one workflow per any non-`main` branch.
   group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.ref_name == 'main' && github.sha || 'anysha' }}
@@ -273,15 +266,12 @@ jobs:
         uses: ./.github/actions/run_tests
 
       - name: Build collab
+        # we should do this on a linux x86 machinge
         run: cargo build -p collab
 
       - name: Build other binaries and features
         run: |
-          cargo build --workspace --bins --all-features
-          cargo check -p gpui --features "macos-blade"
-          cargo check -p workspace
-          cargo build -p remote_server
-          cargo check -p gpui --examples
+          cargo build --workspace --bins --examples
 
       # Since the macOS runners are stateful, so we need to remove the config file to prevent potential bug.
       - name: Clean CI config file
@@ -731,10 +721,6 @@ jobs:
       (contains(github.event.pull_request.labels.*.name, 'run-nix') ||
       needs.job_spec.outputs.run_nix == 'true')
     secrets: inherit
-    with:
-      flake-output: debug
-      # excludes the final package to only cache dependencies
-      cachix-filter: "-zed-editor-[0-9.]*-nightly"
 
   bundle-windows-x64:
     timeout-minutes: 120