Add workaround for KubeJS recipe manager headaches.

[murphy-slaw]

KubeJS is naughty and mucks around in Recipe Manager in an incompatible way, as documented in
#40
This PR implements the suggested workaround from here:
KubeJS-Mods/KubeJS#822

tl;dr

• adds a mixin plugin to conditionally load the RecipeManager mixin only if KubeJS is not present.
• adds a kubejs plugin to load the recipes if KubeJS is present.

It's annoying to have to do this but I figure that some folks might find the workaround useful.

[sisby-folk]

Yeah for the reasons you've already stated we feel it wrong to explicitly depend on a mod just because it misbehaves,

but we'll approve the build and leave this up and anyone who needs this can come grab it.

[murphy-slaw]

That makes sense.

[murphy-slaw]

An update:

I realized that I could build this completely outside of the TS codebase and deliver a separate mod that only has the KubeJS plugin in it. The result is this:

https://github.com/murphy-slaw/tinkerers_kubejs_plugin

I was planning on publishing it on Modrinth if you have no objections.

[sisby-folk]

go ahead!