some cleanup and gqlgen setup

graph/index.graphql

@@ -0,0 +1,52 @@
+# GraphQL schema example
+#
+# https://gqlgen.com/getting-started/
+
+type Mutation
+
+type Query {
+	heartBeat: Boolean!
+}
+
+"""
+Maps a Time GraphQL scalar to a Go time.Time struct.
+"""
+scalar Time
+
+"""
+type Map(Go type: map[string]interface{})
+"""
+scalar Map
+
+"""
+Go type interface{}
+"""
+scalar Any
+scalar Void
+
+"""
+directive to map Go type
+type User @goModel(model: "github.com/my/app/models.User") {
+	id: ID! @goField(name: "todoId")
+	name: String!
+		@goField(forceResolver: true)
+		@goTag(key: "xorm", value: "-")
+		@goTag(key: "yaml")
+}
+"""
+directive @goModel(
+	model: String
+	models: [String!]
+	forceGenerate: Boolean
+) on OBJECT | INPUT_OBJECT | SCALAR | ENUM | INTERFACE | UNION
+
+"""
+directive to map Go type
+"""
+directive @goField(
+	forceResolver: Boolean
+	name: String
+	omittable: Boolean
+) on INPUT_FIELD_DEFINITION | FIELD_DEFINITION
+
+directive @goTag(key: String!, value: String) on INPUT_FIELD_DEFINITION | FIELD_DEFINITION