feat(gx): add incomplete 'CGxDeviceGLSDL' (#2)

* chore(build): add vendored SDL 3.0.0 library

* chore(build): add vendored glew-cmake-2.2.0 library

* feat(console): in the presence of -opengl launch flag, change GxApi to OpenGl

* feat(gx): add uncompleted CGxDeviceGLSDL targeting Windows and Linux

* chore(build): change SDL3 linkage from shared (bad) to to static (good)

vendor/sdl-3.0.0/.github/workflows/cpactions.yml

@@ -0,0 +1,69 @@
+name: Build (C/P Actions)
+
+on: [push, pull_request]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  freebsd:
+    runs-on: ubuntu-latest
+    name: FreeBSD
+    timeout-minutes: 30
+    steps:
+    - uses: actions/checkout@v3
+    - name: Build
+      uses: cross-platform-actions/action@v0.19.1
+      with:
+        operating_system: freebsd
+        version: '13.2'
+        run: |
+          sudo pkg update
+          sudo pkg install -y \
+              cmake \
+              ninja \
+              pkgconf \
+              libXcursor \
+              libXext \
+              libXinerama \
+              libXi \
+              libXfixes \
+              libXrandr \
+              libXScrnSaver \
+              libXxf86vm \
+              wayland \
+              wayland-protocols \
+              libxkbcommon \
+              mesa-libs \
+              libglvnd \
+              evdev-proto \
+              libinotify \
+              alsa-lib \
+              jackit \
+              pipewire \
+              pulseaudio \
+              sndio \
+              dbus \
+              zh-fcitx \
+              ibus \
+              libudev-devd
+          cmake -S . -B build -GNinja  \
+            -Wdeprecated -Wdev -Werror \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DSDL_HIDAPI_LIBUSB=OFF \
+            -DSDL_CHECK_REQUIRED_INCLUDES="/usr/local/include" \
+            -DSDL_CHECK_REQUIRED_LINK_OPTIONS="-L/usr/local/lib"
+          cmake --build build/ --config Release --verbose -- -j`sysctl -n hw.ncpu`
+          cmake --build build/ --config Release --target package
+          
+          cmake --build build/ --config Release --target clean
+          rm -rf build/dist/_CPack_Packages
+          rm -rf build/CMakeFiles
+          rm -rf build/docs
+
+    - uses: actions/upload-artifact@v3
+      with:
+        if-no-files-found: error
+        name: SDL-freebsd
+        path: build/dist/SDL3*