CI builds for all binaries in the repo

[Lgt2x]

Build automatically the binary executables and libs in this repo, like I did for gmloader and gptokeyb2.

This is relevant for:

• oga_controls
• sdl_resolution
• xdelta3
• xmlstartlet

Then, remove the binaries from the repo, and create a script to fetch them from github actions artifacts easily (latest release or master build)

[kloptops]

Excellent.

We are moving away from xmlstartlet, so that can be dropped.

Also oga_controls is also obsolete. It is the precursor to gptokeyb, it's only there for a handful of ports that have yet to be updated, and old PortMaster ports. Not against automating the build of it, but wouldn't put too much stock in it.

This should be rolled into a general reworking of the build/release process.

[kloptops]

I forgot, the builtin love2d runtime should be sourced appropriately also.