Release v0.4.0

[github-actions[bot]]

:robot::package: An automated release PR

This PR was created in response to a manual trigger of the draft-new-release.yaml workflow here: https://github.com/IRNAS/irnas-east-software/actions/runs/3513363452.

The release workflow did the following things:

• created a release/v0.4.0 branch,
• updated the CHANGELOG.md file,
• committed changes,
• pushed release/v0.4.0 branch to remote,
• and opened this PR.

:warning: Important notes

Merging this PR to master will create a new version tag, perform the build release process, create a GitHub release and upload any assets created in the previous process to it. PR back to dev branch will also be created afterwards.

Before merging this PR you can:

• Review and discuss code changes of this PR.
• Pull the created branch to local machine with: git pull origin/release/v0.4.0 and perform last-minute changes. Do not forget to commit and push.

After merging this PR to the master you HAVE to:

• Delete release branch release/v0.4.0
• Merge the second PR to the dev branch to retain release specific changes.

:clipboard: Changelog

Added

• Support for --build-type option for build command. The use of this option is documented in detail in docs/configuration.md. --build-type option was tested exhaustively with unit tests and various test fixtures with pytest. The tests can be found in tests folder.
• Projects using east tool from now on need east.yml file in the root directory. See above mentioned document.

Fixed

• Error code propagation through Nordic's Toolchain Manager.