Add error on thrift version mismatch, add rebuild script.

[feyruzb]

This pull request introduces an automated check to ensure that the CodeChecker API version in the source matches the version installed in the project's virtual environment. If a mismatch is detected, the build process will now fail with a clear error message and instructions for resolving the issue. Additionally, a new script has been added to simplify rebuilding the Thrift API and virtual environment when needed.

API version consistency enforcement:

• Added variables in the Makefile to extract the API version from the source (setup.py) and from the installed package in either venv or venv_dev (codechecker-api).
• Introduced a new check_api_version target in the Makefile that compares the source and virtual environment API versions, halting the build with an error and instructions if they do not match.
• Updated the package target in the Makefile to run the check_api_version step before packaging, ensuring version consistency is always verified.

Developer tooling:

• Added a new script, web/api/completly-rebuild-thrift.sh, which automates rebuilding the Thrift API, cleaning previous builds, recreating the virtual environment, and rebuilding the package. This script provides clear messaging and usage instructions for developers.