add: move upload server to buckets

example/tetratto.toml

@@ -4,7 +4,6 @@ color = "#c9b1bc"
 port = 4118
 banned_hosts = []
 host = "http://localhost:4118"
-lw_host = "http://localhost:4119"
 no_track = []
 banned_usernames = [
     "admin",
@@ -22,6 +21,10 @@ town_square = 166340372315581657
 html_footer_path = "public/footer.html"
 system_user = 211903918383300608
 
+[service_hosts]
+buckets = "http://localhost:8020"
+littleweb = "http://localhost:4119"
+
 [security]
 registration_enabled = true
 real_ip_header = "CF-Connecting-IP"