* Add SetFontScaleMode(ImFontPtr, FontScaleMode)
`IgnoreGlobalScale` was advertised as "excludes the given font from
global scaling", but the intent I had in mind was "excludes the given
font from being scaled in any manner". As the latter functionality is
needed, obsoleted `IgnoreGlobalScale` and added `SetFontScaleMode`.
* Make it correct
* Name consistency
* Implement FontChooserDialog
* Minor fixes
* Fixes 2
* Add Reset default font button
* Add failsafe
* reduce uninteresting exception message
* Add remarks to use AttachExtraGlyphsForDalamudLanguage
* Support advanced font configuration options
* fixes
* Shift ui elements
* more fixes
* Add To(Localized)String for IFontSpec
* Untie GlobalFontScale from default font size
* Layout fixes
* Make UiBuilder.DefaultFontSize point to user configured value
* Update example for NewDelegateFontHandle
* Font interfaces: write notes on not intended for plugins to implement
* Update default gamma to 1.7 to match closer to prev behavior (1.4**2)
* Fix console window layout
These changes are done to ensure that `IFontHandle.Lock` will be guaranteed to obtain a fully built font that will not be modified any further (unless `PostPromotion` is being used for modifying fonts, which should not be done by clients.)
* Moved `CopyGlyphsAcrossFonts` and `BuildLookupTable` from `PostPromotion` to `PostBuild` build toolkit.
* `IFontAtlasBuildToolkit`: Added `GetFont` to enable retrieving font corresponding to a handle being built.
* `InterfaceManager`: Use `OnPostBuild` for copying glyphs from Mono to Default.
* `FontAtlasBuildStep`:
* Removed `Invalid` to prevent an unnecessary switch-case warnings.
* Added contracts on when `IFontAtlas.BuildStepChanged` will be called.
