m17n integration

[PoneyClairDeLune]

描述你请求的功能是否和问题有关 / Is your feature request related to a problem? Please describe.
fcitx5-android currently lacks m17n support. Supporting m17n allows importing the already vast repository of m17n schemas, skyrocketing the total sum of the languages supported.

tbh I really hope this project would beat Gboard soon

描述解决方案 / Describe the solution you'd like
Add support for m17n.

描述替代方案 / Describe alternatives you've considered
There doesn't seem to be an alternative way to use m17n databases/schemas on fcitx5-android.

附加信息 / Additional context

• The m17n project

[rocka]

m17n requires many native libraries and would be a hassle to build on Android. If anybody would like to spend their time to deal with it (including reproducible build), I appreciate it, but I just don't have enough time.

And I doubt the quality of "input methods" implemented in m17n, since their Chinese input methods are "not a good solution" .

[PoneyClairDeLune]

m17n requires many native libraries and would be a hassle to build on Android. If anybody would like to spend their time to deal with it (including reproducible build), I appreciate it, but I just don't have enough time.

And I doubt the quality of "input methods" implemented in m17n, since their Chinese input methods are "not a good solution" .

Not exactly sure about Chinese, but their other schemas could be used quite well.

[wengxt]

@rocka m17n is commonly used for many Indian languages