feat(core): update plugin with generic polling support and monorepo structure

- Update package.json with workspaces configuration for monorepo structure
- Add test:workspaces script for running tests across all packages
- Update src/definitions.ts with enhanced type definitions for generic polling
- Improve src/callback-registry.ts with better error handling and logging
- Enhance src/observability.ts with telemetry budgets and PII redaction
- Update src/typescript/SecurityManager.ts with JWT validation improvements
- Add support for @timesafari/polling-contracts package integration
- Include backward compatibility with existing plugin interfaces
- Improve TypeScript type safety across all core modules
- Add comprehensive error handling and logging throughout

Establishes the foundation for generic polling while maintaining existing functionality.

package.json

@@ -11,11 +11,16 @@
     "watch": "tsc --watch",
     "prepublishOnly": "npm run build",
     "test": "jest",
+    "test:workspaces": "npm test --workspaces",
     "lint": "eslint . --ext .ts",
+    "lint-fix": "eslint . --ext .ts --fix",
     "format": "prettier --write \"src/**/*.ts\"",
     "markdown:check": "markdownlint-cli2 \"doc/*.md\" \"*.md\"",
     "markdown:fix": "markdownlint-cli2 --fix \"doc/*.md\" \"*.md\""
   },
+  "workspaces": [
+    "packages/*"
+  ],
   "keywords": [
     "capacitor",
     "android",