Adding missing permissions (#144)

- Add Reactions
- View Audit Log
- Priority Speaker
(cherry picked from commit 4fb136ee08)

disco/types/permissions.py

@@ -7,6 +7,9 @@ Permissions = Enum(
     ADMINISTRATOR=1 << 3,
     MANAGE_CHANNELS=1 << 4,
     MANAGE_GUILD=1 << 5,
+    ADD_REACTIONS=1 << 6,
+    VIEW_AUDIT_LOG=1 << 7,
+    PRIORITY_SPEAKER=1 << 8,
     READ_MESSAGES=1 << 10,
     SEND_MESSAGES=1 << 11,
     SEND_TSS_MESSAGES=1 << 12,