[I18N] Add support to Italian language

[cmassi]

@RocketChat/ios
I've added following files for locale it

Rocket.Chat.ShareExtension/Resources/it.lproj/Localizable.strings
Rocket.Chat/External/RCEmojiKit/RCEmojiKit.strings
Rocket.Chat/Resources/it.lproj/InfoPlist.strings
Rocket.Chat/Resources/it.lproj/Localizable.strings
Rocket.Chat/Resources/it.lproj/VoiceOver.strings

Please review and merge in current develop

[rafaelks]

@cmassi Amazing, thank you very much! We'll be reviewing it/merging shortly.

[codecov]

Codecov Report

Merging #2332 into develop will decrease coverage by 0.11%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #2332      +/-   ##
===========================================
- Coverage     26.2%   26.09%   -0.12%     
===========================================
  Files          439      439              
  Lines        16058    16058              
===========================================
- Hits          4208     4190      -18     
- Misses       11850    11868      +18

Impacted Files	Coverage Δ
Rocket.Chat/Managers/OAuthManager.swift	83.33% <ø> (ø)	⬆️
...anagers/Model/AuthManager/AuthManagerRecover.swift	36.36% <0%> (-60.61%)	⬇️
Rocket.Chat/Managers/AppManager.swift	42.75% <0%> (-4.83%)	⬇️
Rocket.Chat/Managers/PushManager.swift	24.13% <0%> (-3.45%)	⬇️
...Chat/Controllers/Chat/MessagesViewController.swift	36.63% <0%> (+3.01%)	⬆️
...ontrollers/Base/Main/MainSplitViewController.swift	52.5% <0%> (+7.5%)	⬆️
...ocket.Chat/Extensions/Models/ObjectExtension.swift	100% <0%> (+20%)	⬆️

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