1. languagedetector api

2. languagedetector api: `availability()` static method

3. languagedetector api: `create()` static method

4. languagedetector api: `destroy()` instance method

5. languagedetector api: `detect()` instance method

6. languagedetector api: `expectedinputlanguages` property

7. languagedetector api: `inputquota` property

8. languagedetector api: `measureinputusage()` instance method