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* Auto generate mapping files with command `java -jar grasscutter.jar -gachamap`

* Static file provider
  * For gacha record webpage
  * All static files should be stored at `GRASSCUTTER_RESOURCE/gcstatic/`
  * Can benefit other subsystem in future when webpages involved

Co-authored-by: Kinesis <CCasusensa@users.noreply.github.com>

This is so we dont have to save the entire player to the db every time we send mail

* Frontend is not very beautiful yet
* Didn't include too much `some anime game` data in the page to avoid being DMCA'd

* Fixed `/setstats hp` without changing the max hp.

The Max HP should be modified.

* Add `/setstats mhp` to set Max HP

Limit the avatar level given by "/givechar" command.
If avatar level >90, the game will freeze if open the character interface.

Level should be **lower than 16**

* Attempting to fix crashing on iOS devices

plus I forgot a thing in string.format

* Removed unnecessary things

Update readme because the commad /clearartifacts and /clearweapons have been merged in this PR https://github.com/Grasscutters/Grasscutter/pull/245

* Fix another point which will trigger iOS client to crash
* Revise `compareProtocolVersion` route to handle all method

* Prevent email to be `null` to avoid crash in certain client setup.

Fix #228

Fix DispatchHttpJson handler and add setHttpServer because Express doesn't support removing defined route. (#388)

Complete rework of Dispatch, Added DebugModes