[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/federation/dereferencing/status_permitted.go

@@ -62,6 +62,7 @@ func (d *Dereferencer) isPermittedStatus(
 	requestUser string,
 	existing *gtsmodel.Status,
 	status *gtsmodel.Status,
+	isNew bool,
 ) (
 	permitted bool, // is permitted?
 	err error,
@@ -98,7 +99,7 @@ func (d *Dereferencer) isPermittedStatus(
 		permitted = true
 	}
 
-	if !permitted && existing != nil {
+	if !permitted && !isNew {
 		log.Infof(ctx, "deleting unpermitted: %s", existing.URI)
 
 		// Delete existing status from database as it's no longer permitted.
@@ -110,11 +111,13 @@ func (d *Dereferencer) isPermittedStatus(
 	return
 }
 
+// isPermittedReply ...
 func (d *Dereferencer) isPermittedReply(
 	ctx context.Context,
 	requestUser string,
 	reply *gtsmodel.Status,
 ) (bool, error) {
+
 	var (
 		replyURI     = reply.URI           // Definitely set.
 		inReplyToURI = reply.InReplyToURI  // Definitely set.
@@ -149,8 +152,7 @@ func (d *Dereferencer) isPermittedReply(
 		// If this status's parent was rejected,
 		// implicitly this reply should be too;
 		// there's nothing more to check here.
-		return false, d.unpermittedByParent(
-			ctx,
+		return false, d.unpermittedByParent(ctx,
 			reply,
 			thisReq,
 			parentReq,
@@ -164,6 +166,7 @@ func (d *Dereferencer) isPermittedReply(
 	// be approved, then we should just reject it
 	// again, as nothing's changed since last time.
 	if thisRejected && acceptIRI == "" {
+
 		// Nothing changed,
 		// still rejected.
 		return false, nil
@@ -174,6 +177,7 @@ func (d *Dereferencer) isPermittedReply(
 	// to be approved. Continue permission checks.
 
 	if inReplyTo == nil {
+
 		// If we didn't have the replied-to status
 		// in our database (yet), we can't check
 		// right now if this reply is permitted.