Updates all README.md and docs, and manifests to `require("mip")`. Also extend and improve the documentation on freezing and packaging. This work was funded through GitHub Sponsors. Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
The tests can be copied to the board if needed. Also update the docs to reflect this change. Signed-off-by: Damien George <damien@micropython.org>