[feature] add support for receiving federated status edits (#3597)

* add support for extracting Updated field from Statusable implementers

* add support for status edits in the database, and update status dereferencer to handle them

* remove unused AdditionalInfo{}.CreatedAt

* remove unused AdditionalEmojiInfo{}.CreatedAt

* update new mention creation to use status.UpdatedAt

* remove mention.UpdatedAt, fixes related to NewULIDFromTime() change

* add migration to remove Mention{}.UpdatedAt field

* add migration to add the StatusEdit{} table

* start adding tests, add delete function for status edits

* add more of status edit migrations, fill in more of the necessary edit delete functionality

* remove unused function

* allow generating gotosocial compatible ulid via CLI with `go run ./cmd/gen-ulid`

* add StatusEdit{} test models

* fix new statusedits sql

* use model instead of table name

* actually remove the Mention.UpdatedAt field...

* fix tests now new models are added, add more status edit DB tests

* fix panic wording

* add test for deleting status edits

* don't automatically set `updated_at` field on updated statuses

* flesh out more of the dereferencer status edit tests, ensure updated at field set on outgoing AS statuses

* remove media_attachments.updated_at column

* fix up more tests, further complete the dereferencer status edit tests

* update more status serialization tests not expecting 'updated' AS property

* gah!! json serialization tests!!

* undo some gtscontext wrapping changes

* more serialization test fixing 🥲

* more test fixing, ensure the edit.status_id field is actually set 🤦

* fix status edit test

* grrr linter

* add edited_at field to apimodel status

* remove the choice of paging on the timeline public filtered test (otherwise it needs updating every time you add statuses ...)

* ensure that status.updated_at always fits chronologically

* fix more serialization tests ...

* add more code comments

* fix envparsing

* update swagger file

* properly handle media description changes during status edits

* slight formatting tweak

* code comment

internal/typeutils/astointernal.go

@@ -111,6 +111,13 @@ func (c *Converter) ASRepresentationToAccount(
 		acct.UpdatedAt = pub
 	}
 
+	// Extract updated time if possible, i.e. last edited.
+	if upd := ap.GetUpdated(accountable); !upd.IsZero() {
+		acct.UpdatedAt = upd
+	} else {
+		acct.UpdatedAt = acct.CreatedAt
+	}
+
 	// Extract a preferred name (display name), fallback to username.
 	if displayName := ap.ExtractName(accountable); displayName != "" {
 		acct.DisplayName = displayName
@@ -348,18 +355,25 @@ func (c *Converter) ASStatusToStatus(ctx context.Context, statusable ap.Statusab
 	// zero-time will fall back to db defaults.
 	if pub := ap.GetPublished(statusable); !pub.IsZero() {
 		status.CreatedAt = pub
-		status.UpdatedAt = pub
 	} else {
 		log.Warnf(ctx, "unusable published property on %s", uri)
 	}
 
+	// status.Updated
+	//
+	// Extract updated time for status, defaults to Published.
+	if upd := ap.GetUpdated(statusable); !upd.IsZero() {
+		status.UpdatedAt = upd
+	} else {
+		status.UpdatedAt = status.CreatedAt
+	}
+
 	// status.AccountURI
 	// status.AccountID
 	// status.Account
 	//
-	// Account that created the status. Assume we have
-	// this in the db by the time this function is called,
-	// error if we don't.
+	// Account that created the status. Assume we have this
+	// in the db by the time this function is called, else error.
 	status.Account, err = c.getASAttributedToAccount(ctx,
 		status.URI,
 		statusable,