@W-23749250: add runtime fabric APIs and extra information

[mariaeduardatc]

Changes

• Bumped info.version 1.0.0 → 1.0.5 to match exchange.json.
• Fixed the cluster events path: …/fabrics/{fabricId}/events → …/fabrics/events (org-level collection).
• Added 12 operations across new endpoints: OIDC issuers (GET/PATCH), fabric associations (POST/GET/GET/DELETE), upgrade compatibility check (GET/POST), K8s compatibility check (GET), image registry properties (GET), agent manifest (GET), and runtime support dates (GET).
• Added 11 supporting schemas (ClusterEvent, OidcIssuersPatch, AssociationPayload, UpgradePreChecks, K8sCompatibilityResponse, AgentManifestResponse, etc.).

Validation

• make validate-api API=apis/runtime-fabric → 0 violations (governed + basic).
• Portal test suite passes locally.

[spezzirriemiliano]

All validators pass with zero violations; adds 12 well-documented Runtime Fabric operations and 11 schemas, fixes the info.version mismatch, and follows existing naming/description conventions with no security issues.

Minor note (non-blocking): the /fabrics/{fabricId}/events → /fabrics/events path change (operationId rename to listFabricEvents) is a breaking change to a public endpoint. Framed as a fix to match real org-level backend behavior — worth confirming no existing consumers depend on the old per-fabric path.

[mariaeduardatc]

@spezzirriemiliano im not being able to merge. Double checking if I need to do anything else. Thanks!