[fidl][fmt] Add missing space in usage Previously the program name ran inot the <options> string. Test: Manual Change-Id: Ieabdf0ff1fbd6fde4ccaa91d31d2f714d8075804
[fidl] Initial formatter implementation. Test: tests added in formatter_unittest.cc Change-Id: Iadfb0b891c98b4c865cdc96314ea7bba71ee589c