* First pass at adding comment trees.
- Extracted comment replies into its own table.
- Added ltree column to comment
- Added parent_id param to GetComments to fetch a tree branch
- No paging / limiting yet
* Adding child_count to comment_aggregates.
* Adding parent comment update counts
* Fix unit tests.
* Comment tree paging mostly done.
* Fix clippy
* Fix drone tests wrong postgres version.
* Fix unit tests.
* Add back in delete in unit test.
* Add postgres upgrade script.
* Fixing some PR comments.
* Move update ltree into Comment::create
* Updating based on comments.
* Fix send soft fail.
* Adding check for requests with no id or name, adding max limit.
* Consolidating a few functions.
* Fix page min
* Adding more websocket rate limits.
* Add check to GetCommunity
* Use a default message rate limit check.
* Adding a page and limit checker
* Fix clippy
* Fix clippy again
* Adding check for requests with no id or name, adding max limit.
* Consolidating a few functions.
* Fix page min
* Adding more websocket rate limits.
* Add check to GetCommunity
* Use a default message rate limit check.
* Adding a page and limit checker
* Fix clippy
* Fix clippy again
* Fix limit request.
* Move checks to inside limit_and_offset
* Fixing API tests.
* Change NotFound diesel errors to QueryBuilderError
* Derive default for api request structs, move type enums
* Simplify api by using enum types directly, instead of string
* Add default and clone for most api structs