Initial QSfera import

Server/vendor/github.com/vektah/gqlparser/v2/ast/operation.go

@@ -0,0 +1,32 @@
+package ast
+
+type Operation string
+
+const (
+	Query        Operation = "query"
+	Mutation     Operation = "mutation"
+	Subscription Operation = "subscription"
+)
+
+type OperationDefinition struct {
+	Operation           Operation
+	Name                string
+	VariableDefinitions VariableDefinitionList
+	Directives          DirectiveList
+	SelectionSet        SelectionSet
+	Position            *Position `dump:"-" json:"-"`
+	Comment             *CommentGroup
+}
+
+type VariableDefinition struct {
+	Variable     string
+	Type         *Type
+	DefaultValue *Value
+	Directives   DirectiveList
+	Position     *Position `dump:"-" json:"-"`
+	Comment      *CommentGroup
+
+	// Requires validation
+	Definition *Definition
+	Used       bool `dump:"-"`
+}