Rework ComponentLoader api

[arcnmx]

The signatures and usability of load_component and load_lua_script and related APIs could use some work.

• [ ] Maybe split them up into multiple fns, or follow a builder-ish pattern, dunno?
• [ ] load_lua_script could maybe return the associated script:{path} WpPlugin or something?
• [ ] possibly integrate the load -> activate plugin process of a module or script into a future if possible?
• [ ] verify what wp does to the args of a loaded pw_module because I'm curious and unsure