Thread Decorator (#1686)

* just added the isThreaded property to message based events

* done but I should add a bunch of tests for images and videos and locations

* handling for image and videos, but locations might need to be double checked

* code improvement

* better tests and removed code that is not used, we need to fix first the appearence of replies

* bubble style is solved, we now need plain style

* also added plain style

* better handling for bubble style

* rounded corner only for bubbles in location

* fix for wrong aspect ratio in replies

* all changes done

* better testing

* swift format

* changelog

* PR comments and rebase.

* Simplify corner radius on location timeline view.

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Co-authored-by: Doug <douglase@element.io>

ElementX/Resources/Localizations/en.lproj/Localizable.strings

@@ -47,6 +47,7 @@
 "action_react" = "React";
 "action_remove" = "Remove";
 "action_reply" = "Reply";
+"action_reply_in_thread" = "Reply in thread";
 "action_report_bug" = "Report bug";
 "action_report_content" = "Report Content";
 "action_retry" = "Retry";
@@ -128,6 +129,7 @@
 "common_syncing" = "Syncing";
 "common_text" = "Text";
 "common_third_party_notices" = "Third-party notices";
+"common_thread" = "Thread";
 "common_topic" = "Topic";
 "common_topic_placeholder" = "What is this room about?";
 "common_unable_to_decrypt" = "Unable to decrypt";