Pill View (#1797)

* provider can now check the current session

* More testable code

* created the test condition

* it works but not always not sure why, need to dig deeper

* sadly we need to use textkit 1 to solve this issue

* removed developer option screen test

* this experimental solution kinda works but I need a way to pill recomputation is weird

* format

* display improvement

* better and faster solution

* pilished the code

* better coloring

* swift format

* just need to solve the caching issue

* fix caching issue

* tests done!

* changelog

* pr comments addressed

* all pr comments addressed

* docs

* line lenght

* updated tests and fixed a parsing permalink issue

* MentionBuilder

* pr comments

* swiftformat

* code blocks should not have links

* Update ElementX/Sources/FlowCoordinators/RoomFlowCoordinator.swift

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

* Update ElementX/Sources/Services/Client/ClientProxy.swift

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

* Update UnitTests/Sources/AttributedStringBuilderTests.swift

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

* Update ElementX/Sources/UITests/UITestsAppCoordinator.swift

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

* Update ElementX/Sources/Other/Pills/PillAttachmentViewProvider.swift

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

* Update ElementX/Sources/Other/Pills/MentionBuilder.swift

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

* pr comments

* swiftformat

---------

Co-authored-by: Doug <6060466+pixlwave@users.noreply.github.com>

UnitTests/Sources/HomeScreenViewModelTests.swift

@@ -31,7 +31,7 @@ class HomeScreenViewModelTests: XCTestCase {
         clientProxy = MockClientProxy(userID: "@mock:client.com")
         viewModel = HomeScreenViewModel(userSession: MockUserSession(clientProxy: clientProxy,
                                                                      mediaProvider: MockMediaProvider()),
-                                        attributedStringBuilder: AttributedStringBuilder(permalinkBaseURL: ServiceLocator.shared.settings.permalinkBaseURL),
+                                        attributedStringBuilder: AttributedStringBuilder(permalinkBaseURL: ServiceLocator.shared.settings.permalinkBaseURL, mentionBuilder: MentionBuilder(mentionsEnabled: true)),
                                         selectedRoomPublisher: CurrentValueSubject<String?, Never>(nil).asCurrentValuePublisher(),
                                         appSettings: ServiceLocator.shared.settings,
                                         analytics: ServiceLocator.shared.analytics,