refactor(ci): organize workflow scripts and gate publish on main

.github/workflows/mark-stable.yml

@@ -26,14 +26,14 @@ jobs:
 
       - name: Check whether tagged commit is on main
         id: branch-check
-        run: bash scripts/github/check-tagged-commit-on-main.sh
+        run: bash scripts/github/common/check-tagged-commit-on-main.sh
 
       - name: Wait for CI success on main for this commit
         if: steps.branch-check.outputs.is_on_main == 'true'
         env:
           GH_TOKEN: ${{ github.token }}
-        run: bash scripts/github/wait-for-main-ci-success.sh
+        run: bash scripts/github/mark-stable/wait-for-main-ci-success.sh
 
       - name: Move 'stable' tag only if this version is the highest
         if: steps.branch-check.outputs.is_on_main == 'true'
-        run: bash scripts/github/mark-stable-if-highest-version.sh
+        run: bash scripts/github/mark-stable/mark-stable-if-highest-version.sh