Make Release 2.0.0 E2E results readable and traceable

Makes Release 2.0.0 E2E results readable and traceable, with the TF-SDK support matrix.

Adds a beginner overview, explicit EURECOM NEF/CoreSim setup, 25 individual test flow diagrams and HTML feature reports linked to actual jobs, tests and source. The SDK support matrix records implemented behavior, backend limits and verified E2E scope.

Targets main as a follow-up to the merged release request. Selects matching main artifacts, pins images by digest and verifies the SDK installed in SRM. Existing assertions and cleanup requirements remain enforced.

Verified in pipeline 29267: 260 harness checks and 71 acceptance executions passed (21 container, 20 Helm, 30 network), with no failures or skips. All three labs used the same final artifacts and completed cleanup. See the verified feature report.

Initial parallel local attempts failed during platform setup under host resource pressure; final acceptance above comes from GitLab CI. Federation, multi-cluster and workload updates remain unverified by this suite.