CMake: Update CI

- Duplicated the ci.yml into ci-scons.yml and ci-cmake.yml
- Replaced some manual shell commands to detect changes with  tj-actions/changed-files@v45
- Conditionally run the CI depending on what files change.
- Add ios toolchain from leetal/ios-cmake
- Added a cmake-minimum of 3.10 to silence errors from ios toolchain

(cherry picked from commit b6c0251296)

.github/actions/setup-godot-cpp/action.yml

@@ -22,10 +22,13 @@ inputs:
   ndk-version:
     default: r23c
     description: Android NDK version.
+  buildtool:
+    description: scons or cmake
   scons-version:
     default: 4.4.0
     description: SCons version.
 
+
 runs:
   using: composite
   steps:
@@ -55,8 +58,13 @@ runs:
         version: ${{ inputs.mingw-version }}
 
     - name: Setup SCons
+      if: ${{ inputs.buildtool == 'scons' }}
       shell: bash
       run: |
         python -c "import sys; print(sys.version)"
         python -m pip install scons==${{ inputs.scons-version }}
         scons --version
+
+    - name: Install Ninja
+      if: ${{ inputs.buildtool == 'cmake' }}
+      uses: ashutoshvarma/setup-ninja@master