Gitea: [Feature] UserSetting to choose witch text editor is defualt (SimpleMDE, textarea, automatic)

[6543]

enhancement of #10099
as per lunny:

• automatically, pc SimpleMDE and mobile textarea and this is the default.
• always SimpleMDE
• always textarea

[lafriks]

I would prefer it not to be user setting but being detected by device - mobile or not

[guillep2k]

Why not both? Personally I'd rather not use SimpleMDE if that leaves me out of the stock spell checker, mobile or not, but I can understand why most people will benefit from it.

[lunny]

We could have three options on user settings:

• [ ] automatically, pc SimpleMDE and mobile textarea and this is the default.
• [ ] always SimpleMDE
• [ ] always textarea

[6543]

@lunny nice proposal! because each like it different (example i would choose 3, but most will use 1? ...)