feat: add Go to message action in various places (#3953)

* feat: add `Go to message` action in search popup

* chore: add changelog entry

* fix: only scroll if the scrollbar is shown

* fix: go to message when view isn't focused

* feat: animate highlighted message

* fix: missing includes

* fix: order of initialization

* fix: add `ChannelView::mayContainMessage` to filter messages

* feat: add `Go to message` action in `/mentions`

* fix: ignore any mentions channel when searching for split

* feat: add `Go to message` action in reply-threads

* fix: remove redundant `source` parameter

* feat: add `Go to message` action in user-cards

* feat: add link to deleted message

* fix: set current time to 0 when starting animation

* chore: update changelog

* fix: add default case (unreachable)

* chore: removed unused variable

* fix: search in mentions

* fix: always attempt to focus split

* fix: rename `Link::MessageId` to `Link::JumpToMessage`

* fix: rename `selectAndScrollToMessage` to `scrollToMessage`

* fix: rename internal `scrollToMessage` to `scrollToMessageLayout`

* fix: deleted message link in search popup

* chore: reword explanation

* fix: use for-loop instead of `std::find_if`

* refactor: define highlight colors in `BaseTheme`

* core: replace `iff` with `if`

* fix: only return if the message found

* Reword/phrase/dot changelog entries

Co-authored-by: pajlada <rasmus.karlsson@pajlada.com>

src/singletons/WindowManager.cpp

@@ -320,6 +320,11 @@ void WindowManager::select(SplitContainer *container)
     this->selectSplitContainer.invoke(container);
 }
 
+void WindowManager::scrollToMessage(const MessagePtr &message)
+{
+    this->scrollToMessageSignal.invoke(message);
+}
+
 QPoint WindowManager::emotePopupPos()
 {
     return this->emotePopupPos_;