v0.2.0

• added install script for unix and windows, see docs/installation.md
• added WASM and Javascript (thanks to Spidermonkey being compiled to WASM and Wazero) as template languages. Javascript is now the recommended template language because of it's ease of use and popularity compared to jsonnet
• templates no longer have access to all environment variables by default, instead you can pass them using --env: --env STAGE=prod
• added --auto-approve and --no-input flags, this is mainly for the Google sign in flow
• added built in google sign in browser flow if you don't have credentials in the well know config location
• various fixes around using buildkit on different systems
• buildkit_run_in_container blocks can now provide input_files
• block labels are now part of the metadata instead of the body
• destroy command now removes the output directory
• updated to buildkit v0.11.1