feat(core): invoice service (#8124)

packages/frontend/graphql/src/graphql/index.ts

@@ -750,6 +750,7 @@ export const invoicesQuery = {
   query: `
 query invoices($take: Int!, $skip: Int!) {
   currentUser {
+    invoiceCount
     invoices(take: $take, skip: $skip) {
       id
       status

packages/frontend/graphql/src/graphql/invoices.gql

@@ -1,5 +1,6 @@
 query invoices($take: Int!, $skip: Int!) {
   currentUser {
+    invoiceCount
     invoices(take: $take, skip: $skip) {
       id
       status

packages/frontend/graphql/src/schema.ts

@@ -1941,6 +1941,7 @@ export type InvoicesQuery = {
   __typename?: 'Query';
   currentUser: {
     __typename?: 'UserType';
+    invoiceCount: number;
     invoices: Array<{
       __typename?: 'UserInvoice';
       id: string;