Friends system for app (#2958)

* Friends system for app

* Fix impl issues

* move friends to in-memory store

apps/app-frontend/src/helpers/mr_auth.js

@@ -5,26 +5,8 @@
  */
 import { invoke } from '@tauri-apps/api/core'
 
-export async function login(provider) {
-  return await invoke('modrinth_auth_login', { provider })
-}
-
-export async function login_pass(username, password, challenge) {
-  return await invoke('plugin:mr-auth|login_pass', { username, password, challenge })
-}
-
-export async function login_2fa(code, flow) {
-  return await invoke('plugin:mr-auth|login_2fa', { code, flow })
-}
-
-export async function create_account(username, email, password, challenge, signUpNewsletter) {
-  return await invoke('plugin:mr-auth|create_account', {
-    username,
-    email,
-    password,
-    challenge,
-    signUpNewsletter,
-  })
+export async function login() {
+  return await invoke('plugin:mr-auth|modrinth_login')
 }
 
 export async function logout() {