go : adding features to the go-whisper example, go ci, etc (#384)

* Updated bindings so they can be used in third pary packages.

* Updated makefiles to set FMA flag on optionally, for xeon E5 on Darwin

* Added test script

* Changes for examples

* Reverted

* Made the NewContext method private

bindings/go/examples/go-whisper/main.go

@@ -35,8 +35,7 @@ func main() {
 
 	// Process files
 	for _, filename := range flags.Args() {
-		fmt.Println("Processing", filename)
-		if err := Process(model, filename, flags.GetLanguage(), flags.IsSpeedup(), flags.IsTokens()); err != nil {
+		if err := Process(model, filename, flags); err != nil {
 			fmt.Fprintln(os.Stderr, err)
 			continue
 		}