feat: add RGB handler for alpine theme (#427)

* add handlers for individual Channels

* add notes

* patch fix theme overrides for adaptive colour

* idk

* Update package.json

* fix issue spelling

* Update OpenWhatsNewPopup.ts

* Update OpenWhatsNewPopup.ts

* fix: remove debug line from .gitignore

* chore: fix up patch notes to be a bit more user friendly

* chore: finalise patch notes and fix grammer

* Add empty line to .gitignore

---------

Co-authored-by: Aden Lindsay <140392385+AdenMGB@users.noreply.github.com>

src/plugins/built-in/themes/theme-manager.ts

@@ -25,7 +25,9 @@ type ThemeContent = {
   CanChangeColour?: boolean;
   CustomCSS?: string;
   hideThemeName?: boolean;
+  forceTheme?: boolean;
   forceDark?: boolean;
+  adaptiveCssVariables?: string[];
   images?: { id: string; variableName: string; data: string }[]; // data: base64
 };
 
@@ -35,7 +37,7 @@ export type InstallThemeMeta = {
   serverUpdatedAtSec?: number;
   forceTheme?: boolean;
   adaptiveCssVariables?: string[];
-  images: { id: string; variableName: string; data: string }[]; // data: base64
+  images?: { id: string; variableName: string; data: string }[]; // data: base64
 };
 
 export class ThemeManager {