move imgserver to app/api folder

+ add sqlite methods to configure custom root directories
+ add sqlite.settings module
+ remove date and app name from logger messages
+ add api route to browse directories

app/api/__init__.py

@@ -5,8 +5,17 @@ This module combines all API blueprints into a single Flask app instance.
 from flask import Flask
 from flask_cors import CORS
 
-from app.api import album, artist, favorites, folder, playlist, search, track
-from app.imgserver import imgbp as imgserver
+from app.api import (
+    album,
+    artist,
+    favorites,
+    folder,
+    playlist,
+    search,
+    track,
+    settings,
+    imgserver,
+)
 
 
 def create_api():
@@ -25,6 +34,7 @@ def create_api():
         app.register_blueprint(folder.folderbp)
         app.register_blueprint(playlist.playlistbp)
         app.register_blueprint(favorites.favbp)
-        app.register_blueprint(imgserver)
+        app.register_blueprint(imgserver.imgbp)
+        app.register_blueprint(settings.settingsbp)
 
         return app