Update and migrate translating dic/ini files from wiki (#16627)
NV Access is intending to move most of the wiki into the repository, so changes are tracked better and easier to propose.
The documentation for translating NVDA is very dated, particularly since the update of the translation system.
Description of user facing changes
The following pages were already mirrored in the developerGuide.
The developerGuide sections were reviewed and updated.
Translating Character Descriptions
Translating Symbols
This wiki page was moved and updated in the developerGuide
Translating Gestures
The following changes were made to update the contents:
grammar and formatting fixes
structure changes to make each section more consistent
