Improve the integration of external libraries

[Guts]

Currently

External Python packages are stored raw in the folder ext_libs in the repository, resulting in:

• hard to track dependencies updates
• in contradiction with the git philosophy (only 'your' code)
• the entire packages are loaded, including useless artifacts (tests, examples, docs...) and making it much heavier than necessary
• packages authors are not aware that their software is being used.

Proposed behavior

• create a requirements file listing external packages and use pip to retrieve them during development and packaging workflows.
• remove raw files from
• move ext_libs as a subfolder of this project package resource_sharing

Deducted development workflow

1. Clone the repository
2. Run python -m pip install --no-deps -U -r requirements.txt -t resource_sharing\ext_libs
3. Use the .gitignore file to exclude unwanted dod folders.

Misc: connect with dependabot to track updates

Deducted CI workflow

1. Clone the repository
2. Run python -m pip install --no-deps -U -r requirements.txt -t resource_sharing\ext_libs
3. Run classical operations: lint, tests, packaging, deployment.

[Guts]

@havatv is possible to repoen please? it's still a WIP. Still unachieve:

• remove raw libs
• adapt CI and packaging workflows