Thabala-cli

Added
- Support multi account thabala instances

Fixed
- Exit gently if config is invalid

Fixed
- Default log format to not include `filename` and `lineno`

Added
- Add `get network-policy` command
- Extend `apply` command to deal with infrastructre YAMLs with `NetworkPolicy` resource kinds
- Add support for Python 3.11

Fixed
- Fix `get infra --kind [ResourceKind]` command to check if the given kind is valid
- Generate short default CLI config file at `~/.config/thabala/cli.cfg`.

Added
- Add `service-instance delete` command
- Add `--service-instance-name` option to `get service-instances` command to search service instances by name
- Add `destroy infra` command

Fixed
- Fix `apply infra` command to poll request status

Fixed
- Add missing PyYAML requirement

Added
- Initial release