* remove throttling timers, support setting retry-after, use retry-after in transport
* remove unused variables
* add throttling-retry-after to cmd flags
* update envparsing to include new throttling-retry-after
* update example config to include retry-after documentation
* also support retry-after formatted as date-time, ensure max backoff time
---------
Signed-off-by: kim <grufwub@gmail.com>
* [feature] Add throttling middleware to AP endpoints
* refactor a lil bit
* use config setting, start updating docs
* doc updates
* use relative links in faq doc
* small docs fixes
* return code 503 instead of 429 when throttled
* throttle other endpoints too
* simplify token channel prefills