Android Kernel Tutorials 2.0

What's Changed

• docs: Refine and correcting some information by @rsuntk in #4
• Update README.md by @forsaken-heart24 in #6
• docs: Give more details about GKI and also use pre-GKI as non-GKI sub… by @rsuntk in #8
• docs: Refine languages, fix tables, and add credits to contributor(s) by @rsuntk in #9

New Contributors

• @rsuntk made their first contribution in #4
• @forsaken-heart24 made their first contribution in #6

Full Changelog: toolchains...guides