Giving activity a Note

[IRHM]

Example use case:
We have a show or movie that we have set to FINISHED, but now want to rewatch at a future date so change the status to PLANNED. It could be useful to allow adding a note to the added activity entry (via the ActivityEditor) where we could give a reason behind the action (eg: "rewatching" or "new season out, want to watch", etc).

We could also support quick actions for adding common notes quickly like:

• Rewatching
• New season dropped
• etc, i cant think of any others, maybe we could let users define custom quick activity notes in their settings.