api: Rename LinearComponents.linear to Component.compose

[zml2008]

Closes #225

[lucko]

Overall I agree with this change :)

However, I'm not a huge fan of the name compose. (I raised this in our dev chat but figured I should say here too!)

In my mind, compose is more akin to Function#compose / functional composition than joining/concatenating text elements together.

I would prefer join - but it was noted that this would conflict with the existing method. I personally don't think that's a huge issue (the methods have a similar behaviour) but I also suggested joinWithInlineStyle or just joinInline in response.

Interested to hear if anyone else agrees (happy ofc to settle for the current proposal if it's just me 😆 ) or if there's an even better name I may be overlooking. :)