Grouped the GHA builds into a nice graph

.github/workflows/build_android.yml

@@ -1,6 +1,6 @@
 name: Build - Android
-
-on: [push, pull_request, workflow_dispatch]
+on:
+  workflow_call:
 
 jobs:
   android:

.github/workflows/build_emcc.yml

@@ -1,6 +1,6 @@
 name: Build - Web
-
-on: [push, pull_request, workflow_dispatch]
+on:
+  workflow_call:
 
 jobs:
   emscripten:

.github/workflows/build_linux.yml

@@ -1,6 +1,6 @@
 name: Build - Linux
-
-on: [push, pull_request, workflow_dispatch]
+on:
+  workflow_call:
 
 jobs:
   linux:

.github/workflows/build_macos.yml

@@ -1,6 +1,6 @@
 name: Build - MacOS
-
-on: [push, pull_request, workflow_dispatch]
+on:
+  workflow_call:
 
 jobs:
   macos:

.github/workflows/build_mingw.yml

@@ -1,6 +1,6 @@
 name: Build - Windows
-
-on: [push, pull_request, workflow_dispatch]
+on:
+  workflow_call:
 
 jobs:
   mingw-cross:

.github/workflows/runner.yml

@@ -0,0 +1,24 @@
+name: Build
+on: [push, pull_request, workflow_dispatch]
+
+
+jobs:
+  build-android:
+    name: Android
+    uses: ./.github/workflows/build_android.yml
+
+  build-emcc:
+    name: Web
+    uses: ./.github/workflows/build_emcc.yml
+
+  build-linux:
+    name: Linux
+    uses: ./.github/workflows/build_linux.yml
+
+  build-macos:
+    name: macOS
+    uses: ./.github/workflows/build_macos.yml
+
+  build-mingw:
+    name: Windows
+    uses: ./.github/workflows/build_mingw.yml