Added schema definition for yaml files in .neuro

[jordyantunes]

This version includes changes to the workflow and project configuration files to enable code completion and validation by adding schema references to Apolo's config yaml files. These changes will improve the development experience by providing better code completion and validation.

Changes:

• {{cookiecutter.flow_dir}}/.neuro/live.yml: Added schema reference for code completion support in the live workflow configuration file.
• {{cookiecutter.flow_dir}}/.neuro/project.yml: Added schema reference for code completion support in the project configuration file.

[linear]

MLO-35 Add schema to cookiecutter template

[YevheniiSemendiak]

Please, add changelog.

Here's an example:
https://github.com/neuro-inc/flow-template/tree/747908964c680f6679c45e1d9723d35c9e9d31af/CHANGELOG.D

For reference, we are using towncrier to generate changelogs.
tl; dr: put a file into the CHANGELOG.D folder, the filename is <pr-number>.(feature|bugfix|misc), the content is a description of changes applied in a PR.

[YevheniiSemendiak]

Let's also do the same here: https://github.com/neuro-inc/flow-template-barebone

[costefan]

Looks good, thanks!