chore: add feature matrix

server/service/license/feature_matrix.go

@@ -0,0 +1,21 @@
+package license
+
+type FeatureType string
+
+const (
+	// Accounts.
+
+	// FeatureTypeUnlimitedAccounts allows the user to create unlimited accounts.
+	FeatureTypeUnlimitedAccounts FeatureType = "unlimited_accounts"
+
+	// Customization.
+
+	// FeatureTypeCustomStyle allows the user to customize the style.
+	FeatureTypeCustomeStyle FeatureType = "custom_style"
+)
+
+// FeatureMatrix is a matrix of features in [Free, Pro].
+var FeatureMatrix = map[FeatureType][2]bool{
+	FeatureTypeUnlimitedAccounts: {false, true},
+	FeatureTypeCustomeStyle:      {false, true},
+}