ci: compile go with go1.23, test llgo with go 1.20-1.23

.github/actions/setup-deps/action.yml

@@ -0,0 +1,48 @@
+name: "Setup LLGO Dependencies"
+description: "Install all required dependencies for LLGO"
+inputs:
+  llvm-version:
+    description: "LLVM version to install"
+    required: true
+    default: "18"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install macOS dependencies
+      if: runner.os == 'macOS'
+      shell: bash
+      run: |
+        brew update
+        brew install llvm@${{inputs.llvm-version}} bdw-gc openssl libffi
+        brew link --force libffi
+        echo "$(brew --prefix llvm@${{inputs.llvm-version}})/bin" >> $GITHUB_PATH
+
+        # Install optional deps for demos.
+        #
+        # NOTE: Keep this list updated as new deps are introduced.
+        opt_deps=(
+          cjson       # for github.com/goplus/llgo/c/cjson
+          sqlite      # for github.com/goplus/llgo/c/sqlite
+          python@3.12 # for github.com/goplus/llgo/py
+        )
+        brew install "${opt_deps[@]}"
+    - name: Install Ubuntu dependencies
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        echo "deb http://apt.llvm.org/$(lsb_release -cs)/ llvm-toolchain-$(lsb_release -cs)-${{inputs.llvm-version}} main" | sudo tee /etc/apt/sources.list.d/llvm.list
+        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+        sudo apt-get update
+        sudo apt-get install -y llvm-${{inputs.llvm-version}}-dev clang-${{inputs.llvm-version}} libclang-${{inputs.llvm-version}}-dev lld-${{inputs.llvm-version}} pkg-config libgc-dev libssl-dev zlib1g-dev libffi-dev libcjson-dev libunwind-dev
+        echo "/usr/lib/llvm-${{inputs.llvm-version}}/bin" >> $GITHUB_PATH
+
+        # Install optional deps for demos.
+        #
+        # NOTE: Keep this list updated as new deps are introduced.
+        opt_deps=(
+          libcjson-dev   # for github.com/goplus/llgo/c/cjson
+          libsqlite3-dev # for github.com/goplus/llgo/c/sqlite
+          python3.12-dev # for github.com/goplus/llgo/py
+        )
+        sudo apt-get install -y "${opt_deps[@]}"