Add commons v1.1.0 schema surface

Author: GsCommand

CHANGELOG.md

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+# Changelog
+
+## 1.1.0
+
+- Added simplified self-contained Commons schemas under `schemas/v1.1.0/commons`
+- Added 10 Commons verbs as request/receipt schema pairs
+- Removed shared `$ref` dependencies from the v1.1.0 Commons schema family
+- Standardized Commons receipts around a minimal proof-first structure
+- Added conditional receipt requirements for success/error states
+- Established Commons v1.1.0 as the canonical schema surface for new integrations
+- Preserved earlier schema versions for compatibility and historical reference