[CI] Refactor CI actions, use sub-actions, matrices.

.github/workflows/ios_builds.yml

@@ -4,8 +4,7 @@ on: [push, pull_request]
 # Global Settings
 env:
   GODOT_BASE_BRANCH: master
-  SCONSFLAGS: platform=iphone verbose=yes warnings=extra werror=yes debug_symbols=no --jobs=2 module_text_server_fb_enabled=yes
-  SCONS_CACHE_LIMIT: 4096
+  SCONSFLAGS: verbose=yes warnings=extra werror=yes debug_symbols=no module_text_server_fb_enabled=yes
 
 concurrency:
   group: ci-${{github.actor}}-${{github.head_ref || github.run_number}}-${{github.ref}}-ios
@@ -19,45 +18,21 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      # Upload cache on completion and check it out now
-      - name: Load .scons_cache directory
-        id: ios-template-cache
-        uses: actions/cache@v2
-        with:
-          path: ${{github.workspace}}/.scons_cache/
-          key: ${{github.job}}-${{env.GODOT_BASE_BRANCH}}-${{github.ref}}-${{github.sha}}
-          restore-keys: |
-            ${{github.job}}-${{env.GODOT_BASE_BRANCH}}-${{github.ref}}-${{github.sha}}
-            ${{github.job}}-${{env.GODOT_BASE_BRANCH}}-${{github.ref}}
-            ${{github.job}}-${{env.GODOT_BASE_BRANCH}}
+      - name: Setup Godot build cache
+        uses: ./.github/actions/godot-cache
         continue-on-error: true
 
-      # Use python 3.x release (works cross platform)
-      - name: Set up Python 3.x
-        uses: actions/setup-python@v2
+      - name: Setup python and scons
+        uses: ./.github/actions/godot-deps
+
+      - name: Compilation (armv7)
+        uses: ./.github/actions/godot-build
         with:
-          # Semantic version range syntax or exact version of a Python version
-          python-version: '3.x'
-          # Optional - x64 or x86 architecture, defaults to x64
-          architecture: 'x64'
+          sconsflags: ${{ env.SCONSFLAGS }}
+          platform: iphone
+          target: release
+          tools: false
+          tests: false
 
-      # You can test your matrix by printing the current Python version
-      - name: Configuring Python packages
-        run: |
-          python -c "import sys; print(sys.version)"
-          python -m pip install scons
-          python --version
-          scons --version
-
-      - name: Compilation
-        env:
-          SCONS_CACHE: ${{github.workspace}}/.scons_cache/
-        run: |
-          scons target=release tools=no
-          ls -l bin/
-
-      - uses: actions/upload-artifact@v2
-        with:
-          name: ${{ github.job }}
-          path: bin/*
-          retention-days: 14
+      - name: Upload artifact
+        uses: ./.github/actions/upload-artifact