Init a bot github actions repository

[tiawl]

• [x] Init a composite action repository to refactor bot workflow in each repository dependency
• [x] Use it in vulkan.zig
• [x] Use it in X11.zig
• [x] Use it in wayland.zig
• [x] Use it in glfw.zig
• [x] Use it in cimgui.zig
• [x] Use it in glslang.zig
• [x] Use it in spirv.zig
• [x] Use it in shaderc.zig

[tiawl]

Available here: https://github.com/tiawl/spaceporn-dep-action-bot