[feature-136] Add default image + fix not get local platforms + Add temp icon in nav bar + some style adjustements

src/main/helpers/fs.helpers.ts

@@ -127,12 +127,6 @@ export async function copyDirectoryWithJunctions(src: string, dest: string, opti
     }
 }
 
-export function extname(filePath: string, withDot = true){
-    const ext = path.extname(filePath);
-    if(withDot){ return ext; }
-    return ext.split('.').at(-1);
-}
-
 export interface Progression<T = unknown>{
     total: number;
     current: number;