Add new methods to LanguageDetectorBuilder and rename existing ones

[pemistahl]

For the user's convenience, I will add new methods allowing to build LanguageDetector from languages with a certain script:

• LanguageDetectorBuilder.fromAllLanguagesWithArabicScript()
• LanguageDetectorBuilder.fromAllLanguagesWithCyrillicScript()
• LanguageDetectorBuilder.fromAllLanguagesWithDevanagariScript()
• LanguageDetectorBuilder.fromAllLanguagesWithLatinScript()

At the same time, I will rename all fromAllBuiltIn... methods to fromAll... to make them more succinct and clear. So this is a breaking change but it will be the only one. Starting from version 1.0.0, there won't be any breaking changes anymore.