update to SharpFont 2.5.0.1

https://www.nuget.org/packages/SharpFont/
avoid using the filename map.yaml for sequences

this is already used to describe map rules and confuses newbies
fixed RALint.exe System.Exception:

Tried logging to non-existant channel debug
Merge pull request #3777 from Mailaender/map-yaml

Removed sequences/map.yaml everywhere
Merge pull request #3776 from Mailaender/sharpfont-update

Updated to SharpFont 2.5.0.1
Merge branch 'bleed' of https://github.com/OpenRA/OpenRA into bleed