Refactor package version bumping

[leoyala]

The package version is currently hardcoded in pyproject.toml and init. This also requires to manually change the version on those locations manually before making a release. A more flexible and automated way to manage this would involve the following changes:

1. Infer the package version from the installed package version using something like the following:

from importlib.metadata import version

from . import _logging as _logging

__version__ = version("dstrack")

2. Create a new GitHub action that can be triggered manually, which uses uv version bump to bump the package version and opens a PR.
3. Leave pre-release action as a manual trigger. The tag should be created when the release is created through the GitHub action for “Pre Release”. Once the tag is created, the release pipeline is trigerred automatically.