Automatically detect if method bindings don't get generated and alert the user/trigger CI failure

[DRK3]

If incompatible types are used, method bindings may fail to generate. Usually the gomobile tool just skips generating those method bindings without telling you at the time you used the tool. You have to manually look through the generated header files to see if any were skipped. gomobile does leave a comment in the header files were metthods are skipped, though - we could add a search in our scripts to check for this.