FEATURE: add plain text password toggle to settings (#22)

* FEATURE: add plain text password toggle to settings

* clean up state types, lint, and add migrate

Co-authored-by: austinried <4966622+austinried@users.noreply.github.com>

app/models/settings.ts

@@ -1,9 +1,19 @@
 import { GetAlbumList2Type } from '@app/subsonic/params'
 
-export interface Server {
+export type Server = (TokenPassword | PlainPassword) & {
   id: string
   address: string
   username: string
+  usePlainPassword: boolean
+}
+
+interface PlainPassword {
+  usePlainPassword: true
+  plainPassword: string
+}
+
+interface TokenPassword {
+  usePlainPassword: false
   token: string
   salt: string
 }