Validate styles used in the Babel compiler

[nmn]

Validate all styles that are created with stylex.create (and other APIs) in the Babel compiler itself, in addition to the stylex/valid-styles ESLint rule. Throw an error during the build when invalid values are used even if they can be compiled.

Add a configuration option to log the errors instead.

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The validation logic should be backed by a full-featured CSS value parser. nmn/css-value-parser may be used for this purpose.

Also see, #721