Convert imgui to git submodule (shallow)

.github/workflows/build.yml

@@ -24,9 +24,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-
-      - name: Clone ImGui
-        run: git clone --depth 1 https://github.com/ocornut/imgui.git extern/imgui
+        with:
+          submodules: true
 
       - name: Cache apt packages
         uses: actions/cache@v4
@@ -84,9 +83,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-
-      - name: Clone ImGui
-        run: git clone --depth 1 https://github.com/ocornut/imgui.git extern/imgui
+        with:
+          submodules: true
 
       - name: Install dependencies
         run: |
@@ -165,6 +163,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: Set up MSYS2
         uses: msys2/setup-msys2@v2
@@ -184,10 +184,6 @@ jobs:
             mingw-w64-clang-aarch64-ffmpeg
             git
 
-      - name: Clone ImGui
-        shell: msys2 {0}
-        run: git clone --depth 1 https://github.com/ocornut/imgui.git extern/imgui
-
       - name: Configure
         shell: msys2 {0}
         run: cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
@@ -221,6 +217,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: Set up MSYS2
         uses: msys2/setup-msys2@v2
@@ -242,10 +240,6 @@ jobs:
             mingw-w64-x86_64-nsis
             git
 
-      - name: Clone ImGui
-        shell: msys2 {0}
-        run: git clone --depth 1 https://github.com/ocornut/imgui.git extern/imgui
-
       - name: Configure
         shell: msys2 {0}
         run: cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release

.gitignore

@@ -41,9 +41,10 @@ wowee
 *~
 .DS_Store
 
-# External dependencies (except CMakeLists.txt)
+# External dependencies (except submodules)
 extern/*
 !extern/.gitkeep
+!extern/imgui
 
 # ImGui state
 imgui.ini

.gitmodules

@@ -0,0 +1,4 @@
+[submodule "extern/imgui"]
+	path = extern/imgui
+	url = https://github.com/ocornut/imgui.git
+	shallow = true

extern/imgui

@@ -0,0 +1 @@
+Subproject commit 814c6a194bcb1172df8b8ac9d6520ac0e77654dc