[feature] Add List functionality (#1802)

* start working on lists

* further list work

* test list db functions nicely

* more work on lists

* peepoopeepoo

* poke

* start list timeline func

* we're getting there lads

* couldn't be me working on stuff... could it?

* hook up handlers

* fiddling

* weeee

* woah

* screaming, pissing

* fix streaming being a whiny baby

* lint, small test fix, swagger

* tidying up, testing

* fucked! by the linter

* move timelines to state like a boss

* add timeline start to tests using state

* invalidate lists

docs/swagger.go

@@ -37,6 +37,7 @@
 //	      read:custom_emojis: grant read access to custom_emojis
 //	      read:favourites: grant read access to favourites
 //	      read:follows: grant read access to follows
+//	      read:lists: grant read access to lists
 //	      read:media: grant read access to media
 //	      read:search: grant read access to searches
 //	      read:statuses: grants read access to statuses
@@ -47,6 +48,7 @@
 //	      write:accounts: grants write access to accounts
 //	      write:blocks: grants write access to blocks
 //	      write:follows: grants write access to follows
+//	      write:lists: grants write access to lists
 //	      write:media: grants write access to media
 //	      write:statuses: grants write access to statuses
 //	      write:user: grants write access to user-level info