feat(server): implement KV store API and fingerprinting functionality

- Added a new KV store API with endpoints for querying namespaces and key-value pairs.
- Introduced fingerprinting functionality to hash and manage data fingerprints, allowing for efficient change detection.
- Enhanced existing scripts to utilize the new fingerprinting capabilities, enabling conditional execution based on data changes.
- Updated the web interface to include a dedicated KV page for managing key-value entries and displaying their details.
- Improved overall user experience with pagination and search capabilities in the KV management interface.

packages/server/workflows/default/rss-selfhst-to-ntfy.yaml

@@ -5,6 +5,10 @@ scripts:
       url: "https://selfh.st/rss/"
       outputVar: item
       jsonata: items[0]
+  - script: fingerprint.js
+    config:
+      key: selfhst-latest
+      jsonata: "data.item.guid ? data.item.guid : data.item.link"
   - script: jsonata.js
     config:
       expression: |