* [V3 CogManagerUI] implement text-only support in [p]cogs
* Change page length to 1800 + workaround for pages starting with delim
* [V3 Core] text mode support for [p]contact and [p]dm
* Implement text-only support in modlog and fix everything that broke because of it
* Fix modlog stuff in filter too
* Fix tests
* Implement optional embed support in [p]help
* move to .format
Help didn't account for docstrings passing length limits which I noticed a while ago and as noticed again when Palm forgot a dual newline in a command docstring.
This PR sees to fix this by enforcing length limits on description, field names and field values