Fabric support

[Earthcomputer]

This PR adds Fabric support. Along with simply porting what was on my fork to the new project creator refactor, I decided to go a little further and add the following features which are not on my fork:

• Bumped the TemplateMakerFabric dependency which fixes one or two bugs
• Method entry points are now supported
• Smarter entry point creation
• Added the ability to choose the license of your mod and generate a license file with the template
• Added some references to the fabric.mod.json, and basic fabric.mod.json validation
• Removed 1.7.10 support (okay maybe not this last one)

Closes #663

[RedNesto]

Make sure to catch IOExceptions when instanciating JarFiles, this is the only real issue I found in this PR. There's also a TODO that's not been taken care of (I guess?), the rest is pretty much formatting/styling comments.
I'll test it soon, but overall it looks good.

[RedNesto]

These options are redundant, they can be removed. From the method's javadoc:

If no options are present then this method works as if the CREATE, TRUNCATE_EXISTING, and WRITE options are present.

[Earthcomputer]

I copied that from CreatorStep.writeTextToFile, and those options are present explicitly in many places throughout the codebase. Someone should go through and clean that up really.

[DenWav]

Neat, I didn't realize those were the defaults. That's good to know.

[Earthcomputer]

I had to change a little how the semver parser works. Fabric converts Minecraft versions to semver e.g. with 20w22a -> 1.16-alpha.20.22.a. However, mcdev's semver parser didn't like this perfectly valid version. Now, there are three types of version parts rather than two: ReleasePart, TextPart and PreReleasePart. The PreReleasePart consists of the last part of the main version plus "sub-parts" after the - or _. Thus, 1.16-alpha.20.22.a Is now parsed as ReleasePart.PreReleasePart, where the PreReleasePart has sub-parts TextPart.ReleasePart.ReleasePart.TextPart. Version parts are always ordered like ReleasePart > PreReleasePart > TextPart, and TextParts are ordered first by hard-coded special-cased priorities (this already existed), then lexicographically to break ties.
All old semver behaviour should have been kept; if there are no dots in sub-parts, and the sub-part is text followed by a number, then it is parsed as if the text and the number were separated by a dot.

[DarkiBoi]

If this gets approved, maybe you could change the README.md and the Website accordingly too? Aka add Fabric to the supported Minecraft Development Platforms

[Earthcomputer]

Oh right, good point

[DarkiBoi]

When is this going to get merged?

[kotx]

Awesome! It'd be great if this were merged soon so we don't need to switch between plugin versions every time we need to use Fabric.

[DenWav]

Took a bit of a break, sorry. Everything looks sane to me, nothing sticks out that I think really needs to be changed.