Simplify project releases

[GrantJL]

Currently any releases are manually handled, its possible that some automation would make things easier.

Determine whether automation here is worth the effort required, then move on from there.

• Add release package builder (easier/consistent release builds)
• Github release package dist
  • Just contains the built dll, easy
• BakkesMod Plugin release package dist
  • Built dll
  • Project source
    • basically just what's on git, minus git files, readmes (.user files need begoned)
    • submodule source (minus all the junk, i.e. just src dirs, include dirs, license)

[GrantJL]

Have added bundle.ps1 which just bundles the plugin source and dll together, then zips it all together. See commit f17086.

Usage: ./bundle.ps1 v1.3.0
Output: ./dist/rl-lobby-ranks-v1.3.0.zip