[feature] Notify accounts when a status they've interacted with has been edited (#4157)

This pull request adds sending notifications to local accounts that have interacted with a status, if we receive or create a new edit for that status.

closes https://codeberg.org/superseriousbusiness/gotosocial/issues/3991
Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4157
Co-authored-by: tobi <tobi.smethurst@protonmail.com>
Co-committed-by: tobi <tobi.smethurst@protonmail.com>

internal/gtsmodel/statusfave.go

@@ -35,3 +35,10 @@ type StatusFave struct {
 	PreApproved     bool      `bun:"-"`                                                             // If true, then fave targets a status on our instance, has permission to do the interaction, and an Accept should be sent out for it immediately. Field not stored in the DB.
 	ApprovedByURI   string    `bun:",nullzero"`                                                     // URI of an Accept Activity that approves this Like.
 }
+
+// GetAccount returns the account that owns
+// this fave. May be nil if fave not populated.
+// Fulfils Interaction interface.
+func (f *StatusFave) GetAccount() *Account {
+	return f.Account
+}