move v.v to cmd/v

cmd/tools/vbuild-examples.v

@@ -0,0 +1,22 @@
+module main
+
+import (
+	os
+	testing
+	filepath
+)
+
+fn main() {
+	args := os.args
+	args_string := args[1..].join(' ')
+	params := args_string.all_before('build-examples')
+	
+	if testing.v_build_failing(params, 'examples'){
+		exit(1)
+	}
+
+	if testing.v_build_failing(params + '-live', filepath.join( 'examples', 'hot_reload')){
+		exit(1)
+	}
+
+}