Changes:
- Most of the go code is now located in internal packages.
- Code refactored and simplified in some cases.
- Removed the 'download' mage target and integrated the download code
into the internal 'prepare' package.
- Moved all mage target code to magefile.go.
- Added missing descriptions to the mage targets.
- Updated go.mod.
Fixed:
- Created a custom function to validate the checksum of the
downloaded Woodpecker tar file.
- Specified the environment when running 'clean'.
We shall now use Go and Mage to manage the Flow services. The templates
have been converted to Go templates, Mage has replaced Make and the
helper bash scripts have been rewritten in Go.
