Upgraded from v9 default styles to v10 wherever the developer expects to get the latest and greatest, as well as in a couple tests where it may be beneficial to ensure that we can handle a two-digit version number in the style URL.
Cherry-picked from ed54849e99.
* adds checkstyle to CI
* fixed gradlew path
* resolved testapp checkstyle violations
* added back mapboxMap variable for test
* checkstyle annotations
* checkstyle SDK round 1
* maps package checkstyle
* rest of SDK checkstyle
* checkstyle gesture library
* checkstyle test
* finished rest of test checkstyle
* resolved all checkstyle errors
* fixed class name
* removed old test file
* fixed camera postion test
* fixed native crash
