Refactored the LintLocalizableStrings script

[mpretty-cyro]

• Added new 'LintControl' mechanisms to allow for ignoring sections of code
• Added new 'MatchType' mechanisms for excluding unlocalized cases
• Updated the code to explicitly handle localized template strings (both single and multiline)
• Updated the code to process files across multiple threads to improve performance
• Updated the code to use Swift 5.7 regex and store in static variables to prevent reconstruction every time they are used
• Removed the list of individual files which are ignored (now just output a count)
• Fixed an issue where having a localized string on a subsequent line could result in an unlocalized (or incorrectly localized) string not being detected
• Fixed an issue where having multiple strings on a single line could result in an unlocalized string not being detected
• Fixed an issue where zero-width characters would result in the variable count comparison between translations failing
• Fixed a number of localization warnings