Cleanups and package refactoring

packages/cache/src/internal/shared/user-agent.ts

@@ -0,0 +1,9 @@
+// eslint-disable-next-line @typescript-eslint/no-var-requires, @typescript-eslint/no-require-imports
+const packageJson = require('../../../package.json')
+
+/**
+ * Ensure that this User Agent String is used in all HTTP calls so that we can monitor telemetry between different versions of this package
+ */
+export function getUserAgentString(): string {
+    return `@actions/cache-${packageJson.version}`
+}