[FEAT] cleanup GET /wallet endpoint, add wallet api routes (#1932)

* [FEAT] cleanup GET /wallet endpoint, add wallet api route
this removes the functionalitiy to create accounts and wallets via
the GET /wallet endpoint in generic.py

it add endpoints inside the api.py for it and the frontend is modified to use the api endpoints

this also simplifies for the `feat/login` for the route.

* remove stale generic tests and add api tests

* bug wrong endpoint create account

* vlad nitpick

* added checkif deleted is 404

* reload after renaming wallet

* another iteration with vlad

* create new wallet if it none exist

* fix delete refresh

* formatting

lnbits/static/js/components.js

@@ -86,7 +86,7 @@ Vue.component('lnbits-wallet-list', {
   },
   methods: {
     createWallet: function () {
-      LNbits.href.createWallet(this.walletName, this.user.id)
+      LNbits.api.createWallet(this.user.wallets[0], this.walletName)
     },
     updateWalletBalance: function (payload) {
       this.activeBalance = payload