Add online-mode cargo feature

Author: mat-1

CHANGELOG.md

@@ -13,6 +13,7 @@ is breaking anyways, semantic versioning is not followed.
 - Add `Client::query_entity` and `try_query_entity` to complement `query_self`.
 - Add `Client::entity_interact` and `EntityInteractEvent` to interact with entities without checking that they're in the crosshair.
 - Implement initial support for mob effects, including jump boost, haste, conduit power, and mining fatigue. (@ShayBox)
+- Allow disabling dependencies related to Microsoft auth with the `online-mode` cargo feature.
 
 ### Changed
 
@@ -40,7 +41,6 @@ is breaking anyways, semantic versioning is not followed.
 - The WritableBookContent and ResolvableProfile data components had the wrong protocol implementations.
 - Resolving server addresses shouldn't be recursive.
 
-
 ## [0.14.0+mc1.21.8] - 2025-09-28
 
 ### Added