[WIP] [NEW] Project 03 - Changing, searching and adding channels VoiceOver accessible

[rudrankriyam]

@RocketChat/ios

• [x] Clicking on a room reads the WHOLE message, instead of an excerpt of the message.
• [x] Sorting by activity needs a hint regarding double tapping to open the options.
• [x] “New Channel” Button is not accessible. It is described in VoiceOver as a “Button” and should have an accessibilityLabel = “Create New Channel”
• [x] “Public Channel” and “Read only channel” text field and the switch toggle should be read as one.
• [x] After creating a channel, VoiceOver describes the button as “Create Dim”, which should be labelled as “Channel created successfully.” Edit - Create Dim means that it is in working state. After the channel is created, it goes to the channel itself.
• [x] The cross button is described in VoiceOver as “Stop” button, which needs to be named as “Close” button.
• [x] “Share” button needs to be associated with UIAccessibilityTraits.button.
• [x] “Favorite” button is not accessible. It is described in VoiceOver as a “Button” and should have an accessibilityLabel = “Star”
• [x] The “Video Call” button is not accessible. It is described in VoiceOver as “User.Detail Video Call”, which should have an accessibilityLabel = “Video Call”.
• [x] Receive Notification and Show Unread Counter text field and the switch toggle should be read as one.
• [x] The VoiceOver should describe the cell as one unit, instead of two different accessibility elements.

[codecov[bot]]

Codecov Report

Merging #2751 into develop will decrease coverage by 0.03%. The diff coverage is 0%.

@@             Coverage Diff             @@
##           develop    #2751      +/-   ##
===========================================
- Coverage     46.1%   46.07%   -0.04%     
===========================================
  Files          626      626              
  Lines        28938    28958      +20     
===========================================
- Hits         13343    13341       -2     
- Misses       15595    15617      +22

Impacted Files	Coverage Δ
...t/Views/Subscriptions/SubscriptionsTitleView.swift	41.66% <ø> (-3.08%)	:arrow_down:
...at/Views/Cells/Subscription/SubscriptionCell.swift	0% <0%> (ø)	:arrow_up:
...ontrollers/Chat/ChannelActionsViewController.swift	0% <0%> (ø)	:arrow_up:
...iews/Cells/Subscription/BaseSubscriptionCell.swift	0% <0%> (ø)	:arrow_up:
...trollers/Subscriptions/NewRoomViewController.swift	19.56% <0%> (-0.29%)	:arrow_down:
...ubscriptionsList/SubscriptionsViewController.swift	1.41% <0%> (-0.01%)	:arrow_down:

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