Skill info manual input UI

[RaenonX]

Allows inputting the skill info of a unit, including attacking, supportive, or healing.

This will deprecate partial functionality of the parser (https://github.com/RaenonX-DL/dragalia-data-parse).

Because the maintenance effort required for parsing the skills is greater than manually inputting them as adding a new mechanism (such as amp, passive stacking) disrupting the whole parsing logic.

Also, unit analyses to include skill details, so manually inputting the skill info shouldn't cost much. The only downside of this is that the data might contain errors, and it requires manual effort.