Better sticker apply processes

[the-Astra]

Allows better functionality when applying and removing stickers. Runs two new contexts apply_sticker = true and remove_sticker = true along with the card and sticker.

• apply_sticker context also differentiates between stickers applied to cards by the game (i.e. higher stake shops and challenges) and stickers applied by modded objects. Done via global value SMODS.sticker_from_game

Also overrides vanilla sticker applying functions (e.g. Card:set_eternal) to use SMODS funcs instead to allow for backwards compatibility

Additional Info:

• I didn't modify api's or I've made a PR to the wiki repo.
• I didn't modify api's or I've updated lsp definitions.
• I didn't make new lovely files or all new lovely files have appropriate priority.

[english5040]

just a note that Eremel said they are going to change the sticker application API, in case you wanted to discuss

[the-Astra]

just a note that Eremel said they are going to change the sticker application API, in case you wanted to discuss

I remember hearing this at some point. I foresee these functions persisting in some shape or form when he does touch on it, hence why I made the PR now instead of waiting