[Optimize] Add CI optimization step using Graphite action (#4115)

tl;dr: https://graphite.dev/docs/stacking-and-ci#reducing-ci-runs-for-github-actions

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---

## PR-Codex overview
This PR optimizes the CI workflow by adding a step to skip unnecessary processes based on a condition.

### Detailed summary
- Added `optimize_ci` job with skip condition
- Updated `build`, `lint`, `test`, `e2e`, and `size` jobs to depend on `optimize_ci` and skip if condition is met

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}`

<!-- end pr-codex -->

.github/workflows/CI.yml

@@ -19,7 +19,21 @@ env:
   CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
 jobs:
+  optimize_ci:
+    runs-on: ubuntu-latest
+    outputs:
+      skip: ${{ steps.check_skip.outputs.skip }}
+    steps:
+      - name: Optimize CI
+        id: check_skip
+        uses: withgraphite/graphite-ci-action@main
+        with:
+          graphite_token: ${{ secrets.GRAPHITE_OMTIMIZE_TOKEN }}
+  
+
   build:
+    needs: optimize_ci
+    if: needs.optimize_ci.outputs.skip == 'false'
     runs-on: ubuntu-latest
     name: Build Packages
     steps:
@@ -33,6 +47,8 @@ jobs:
         run: pnpm build:packages
 
   lint:
+    needs: optimize_ci
+    if: needs.optimize_ci.outputs.skip == 'false'
     timeout-minutes: 15
     name: Lint Packages
     runs-on: ubuntu-latest
@@ -51,6 +67,8 @@ jobs:
       - run: pnpm lint
 
   test:
+    needs: optimize_ci
+    if: needs.optimize_ci.outputs.skip == 'false'
     timeout-minutes: 15
     name: Unit Tests
     runs-on: ubuntu-latest
@@ -77,6 +95,8 @@ jobs:
           verbose: true
 
   e2e:
+    needs: optimize_ci
+    if: needs.optimize_ci.outputs.skip == 'false'
     timeout-minutes: 15
     name: E2E Tests
     runs-on: ubuntu-latest
@@ -144,8 +164,9 @@ jobs:
           fi
 
   size:
+    needs: optimize_ci
     # only run on pull requests
-    if: github.event_name == 'pull_request'
+    if:  github.event_name == 'pull_request' && needs.optimize_ci.outputs.skip == 'false'
     timeout-minutes: 15
     name: "Size"
     runs-on: ubuntu-latest

.github/workflows/CI_legacy.yml

@@ -27,7 +27,20 @@ env:
   CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
 jobs:
+  optimize_ci:
+    runs-on: ubuntu-latest
+    outputs:
+      skip: ${{ steps.check_skip.outputs.skip }}
+    steps:
+      - name: Optimize CI
+        id: check_skip
+        uses: withgraphite/graphite-ci-action@main
+        with:
+          graphite_token: ${{ secrets.GRAPHITE_OMTIMIZE_TOKEN }}
+
   build:
+    needs: optimize_ci
+    if: needs.optimize_ci.outputs.skip == 'false'
     runs-on: ubuntu-latest
     name: Build Packages
     steps:
@@ -41,6 +54,8 @@ jobs:
         run: pnpm build:legacy_packages
 
   lint:
+    needs: optimize_ci
+    if: needs.optimize_ci.outputs.skip == 'false'
     timeout-minutes: 15
     name: Lint Packages
     runs-on: ubuntu-latest
@@ -54,6 +69,8 @@ jobs:
       - run: pnpm lint:legacy
 
   test:
+    needs: optimize_ci
+    if: needs.optimize_ci.outputs.skip == 'false'
     timeout-minutes: 15
     name: Unit Tests
     runs-on: ubuntu-latest
@@ -74,6 +91,8 @@ jobs:
           verbose: true
 
   e2e:
+    needs: optimize_ci
+    if: needs.optimize_ci.outputs.skip == 'false'
     timeout-minutes: 15
     name: E2E Tests
     runs-on: ubuntu-latest