Add platform aware windows path handling

Author: artis101

Diff for: utils/path.go

@@ -19,6 +19,8 @@ func GetDefaultCliConfigPath() string {
 			switch getGOOS {
 			case "darwin":
 				return "Library/Arduino15"
+			case "windows":
+				return "AppData\\Local\\Arduino15"
 			default:
 				return ".arduino15"
 			}

Diff for: utils/path_test.go

@@ -33,7 +33,7 @@ func TestGetDefaultCliConfigPath(t *testing.T) {
 			name:     "windows path",
 			goos:     "windows",
 			user:     &user.User{HomeDir: "C:\\Users\\test"},
-			wantPath: path.Join("C:\\Users\\test", ".arduino15", "arduino-cli.yaml"),
+			wantPath: path.Join("C:\\Users\\test", "AppData\\Local\\Arduino15", "arduino-cli.yaml"),
 		},
 		{
 			name:     "nil user",