observability-platform-api release v0.4.0

Added

• Added new gRPC routes for Loki and Tempo write

Changed

• Rename mimir.writeRewritePaths → mimir.write.stripPrefixPaths to clarify that the /prometheus prefix is stripped before forwarding; add equivalent stripPrefixPaths: [] defaults to loki and tempo write config.
• Expose Tempo gRPC backend config in values (tempo.read.grpc.backendService, tempo.read.grpc.backendPort) instead of hardcoding in the template.
• Expose Loki and Mimir backend config in values (loki.read.backendService, loki.read.backendPort, loki.write.backendService, loki.write.backendPort, mimir.read.backendService, mimir.read.backendPort, mimir.write.backendService, mimir.write.backendPort) instead of hardcoding in the template.
• Restructure Helm templates into per-service subdirectories (templates/loki/, templates/mimir/, templates/tempo/).
• Share HTTPRouteFilter resources within each service: a single headers-check filter and (for Mimir/Tempo) a single rewrite filter are now referenced by all routes in that service namespace.