Accept and decline invites (#806)

* Add accept/decline invite api

* Fix isDirect logic

* Add logic for accepting/decling invites

* Add error handling structure

* Add decline alert

* Add navigation to joined room

* Add generic error

* Add changelog.d file

* Cleanup

* Fix failing UTs

* Add UTs

* Add UI tests

* Cleanup

* Update ref screenshots

* Refactor invitesScreen state

* Improve switch handling in UserSessionFlowCoordinator

* Fix build error

UITests/Sources/InvitesScreenUITests.swift

@@ -28,4 +28,13 @@ class InvitesScreenUITests: XCTestCase {
         XCTAssertTrue(app.staticTexts[A11yIdentifiers.invitesScreen.noInvites].exists)
         app.assertScreenshot(.invitesNoInvites)
     }
+    
+    func testDeclineInvite() {
+        let app = Application.launch(.invites)
+        let declineButton = app.buttons[A11yIdentifiers.invitesScreen.decline].firstMatch
+        XCTAssert(declineButton.exists)
+        declineButton.tap()
+        XCTAssertEqual(app.alerts.count, 1)
+        app.assertScreenshot(.invites, step: 1)
+    }
 }

UITests/Sources/__Snapshots__/Application/en-GB-iPad-9th-generation.invites-1.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:227793880d0425d98c0dbb1d8a5f6439432383d9a9506030b9f4838bf9c0ce4d
+size 188175

UITests/Sources/__Snapshots__/Application/en-GB-iPhone-14.invites-1.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:da9cae78d8cf7592e20aedd014801c912e0feb90a1a9365b6ed99bea5b11bc1f
+size 356615

UITests/Sources/__Snapshots__/Application/pseudo-iPad-9th-generation.invites-1.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3221977873adc6942d96a283f8625a835277201db4897a72fd6942a8191ed221
+size 233543

UITests/Sources/__Snapshots__/Application/pseudo-iPhone-14.invites-1.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0fe7a52291eb74567927f6da56a533f1dfc616a899d1174e65d36198ca65ca11
+size 461856