Normalize whitespace in source files

Ensure that no source files have trailing whitespace at end of lines and ensure that all files end with a single trailing newline.

This also adds Github Actions to enforce whitespace conventions.

src-ui/src/app/data/results.ts

@@ -3,5 +3,5 @@ export interface Results<T> {
   count: number
 
   results: T[]
-  
+
 }