Update airplanedev/lib to v0.2.2 (#347)

Includes fallback for missing `airplanesdk` python module

Use runtime from lib (#343)

Use runtime from the `lib` library.

Remove runtime and examples from CLI

Remove nil error

Fix bin check

Fix `python dev` to check for python if python3 is not found

On Windows (e.g. Ancaonda and the normal Python installer), python3.exe
is not available and you have to run python.exe. We therefore attempt to
use python3, but if python3 isn't available and python is, we use that
instead. We still check that `python --version` returns `Python 3`.

Merge branch 'git-metadata' of github.com:airplanedev/cli into git-me…

…tadata

Store credentials file in a gitignored directory (#327)

Force git to ignore the location where google credentials are stored during the release pipeline - following the instructions here: https://goreleaser.com/errors/dirty/?h=dirty

Merge branch 'main' into update-logger

Push docker image with cli on release (#324)

Push to our gcr registry when creating a CLI release. Push two tags, `:latest` and `v0.1.0` to `airplane-cli`.

We will use this as a base image for our github action. From the action you can just call `airplane` to run the airplane cli

Fix constraints.options being required in YAML (#323)

This was missing a `yaml:"options,omitempty"` directive and so users of
legacy YAML files were seeing an error if they didn't specify `options`
for a constraint.

Resolves AIR-2414