Remove Coremod, add mcmod.info

[glowredman]

• Use same modID in gradle.properties as in @Mod annotation
• Define API package
• Remove coremod (unused)
• Add mcmod.info file (I used this as template, if you want any further changes lmk)

[jss2a98aj]

The coremod is a dummy to stop Thaumcraft 4 from downloading standard Baubles, and should not be removed unless replaced with a better soloution.
I think GTNH uses an altered Thaumcraft jar to entirely work around the issue, but that won't work well for non-GTNH users.

[glowredman]

That makes sense but it isn't even loaded by FML currently. Due to how the buildscript works, the entry in MANIFEST.MF is .thaumcraft.codechicken.core.launch.DepLoader (note the dot at the beginning).

[jss2a98aj]

It does still result in TC4 not being able to download Baubles, at least on the setups I have tested it with. I have been considering a Mixins dependency to make some compatibility improvements to the few ARR mods that do not properly detect stuff after the first four slots. Using it to propelry kill the dep loader as well would probably be a good idea.