feat: add paging capability in getFlows query

packages/backend/src/graphql/schema.graphql

@@ -4,7 +4,7 @@ type Query {
   getConnectedApps(name: String): [App]
   testConnection(id: String!): Connection
   getFlow(id: String!): Flow
-  getFlows(appKey: String): [Flow]
+  getFlows(limit: Int!, offset: Int!, appKey: String): FlowConnection
   getStepWithTestExecutions(stepId: String!): [Step]
   getExecutions(limit: Int!, offset: Int!): ExecutionConnection
   getExecutionSteps(
@@ -189,6 +189,15 @@ type Field {
   clickToCopy: Boolean
 }
 
+type FlowConnection {
+  edges: [FlowEdge]
+  pageInfo: PageInfo
+}
+
+type FlowEdge {
+  node: Flow
+}
+
 type Flow {
   id: String
   name: String