feat: implemented R sessions api

[ymarcon]

No description provided.

[Copilot]

Pull request overview

This pull request implements an R sessions API for the datashield-opal package, introducing server-side R session management capabilities. The changes include a new OpalRSession class, updates to OpalConnection for session handling, and modifications to dependencies and project configuration.

Changes:

• Implements R sessions API with lifecycle management (start, check status, close)
• Updates dependencies from git URLs to pinned package versions
• Adds development dependencies for data visualization (matplotlib, pandas)
• Adds Jupyter notebook example demonstrating the new functionality
• Modifies test to use different resource identifiers

Reviewed changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated 3 comments.

File	Description
pyproject.toml	Version downgrade to 0.2.0, dependency updates to pinned versions, new dev dependencies, wheel packaging exclusions
datashield_opal/impl.py	New OpalRSession class implementing RSession interface, modified OpalConnection with session management, added authentication check
tests/test_api_analysis.py	Updated resource ID in test from RSRC.CNSIM1 to RSRC.CNSIM2 for server2
examples/datashield.py.ipynb	New comprehensive example notebook demonstrating DataSHIELD operations including sessions, resource assignments, and visualizations

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.