The script used to parse different channel for historical (forgotten) reasons. This is the only script that works that way, and release data is not supposed to be consumed by other clients than endoflife.date. So aligning this script for all the other scripts.
In case other channel data is useful for someone, it would be preferable to create multiple products so that the data is available through our official API.
- remove the use of environment variables to get directory paths,
- make use of arguments / argparse instead of environment variables in `update.py` and `report.py`,
- automatically guess the data directory in `latest.py` based on the script's location,
- propagate log level to auto scripts,
- move `list_configs_from_argv` from `endoflife` module to `releasedata` module,
- use `list_products` in `latest.py` to load the product's frontmatters.
Align custom scripts with generic scripts, making them configurable. This has a few advantages:
- script code is more unified,
- no more hard-coded method names in scripts, which is less error prone and make it easier to rename scripts,
- no more hard coded product names in scripts, which is less error prone and make it easier to rename products,
- less hard-coded URLs and regexes in scripts, which makes auto-configuration more expressive / updatable,
Also added method `endoflife.list_configs_from_argv()` so that it is easier to manipulate scripts arguments.
