ATL-1136: Add .adoc and .md file support

Author: fstasi

Diff for: arduino-ide-extension/src/common/protocol/sketches-service.ts

@@ -88,7 +88,8 @@ export namespace Sketch {
         export const MAIN = ['.ino', '.pde'];
         export const SOURCE = ['.c', '.cpp', '.s'];
         export const ADDITIONAL = ['.h', '.c', '.hpp', '.hh', '.cpp', '.s', '.json'];
-        export const ALL = Array.from(new Set([...MAIN, ...SOURCE, ...ADDITIONAL]));
+        export const DOCUMENTATION = ['.md', '.adoc'];
+        export const ALL = Array.from(new Set([...MAIN, ...SOURCE, ...ADDITIONAL, ...DOCUMENTATION]));
     }
     export function isInSketch(uri: string | URI, sketch: Sketch): boolean {
         const { mainFileUri, otherSketchFileUris, additionalFileUris } = sketch;