Cache Gradle distributions downloaded for a particular version (#58)

- Cache is separate from (but similar to) the wrapper distribution cache
- New 'distributions-cache-enabled' flag controls caching of all downloaded distributions
  (including wrapper distributions)
- Deprecated the 'wrapper-cache-enabled' flag for removal in v2

src/cache-wrapper.ts

@@ -107,7 +107,16 @@ export function extractGradleWrapperSlugFromDistUri(
 }
 
 function isWrapperCacheDisabled(): boolean {
-    return !github.inputBoolean('wrapper-cache-enabled', true)
+    // Check if either 'distributions' or 'wrapper' cache has been disabled
+    const wrapperCacheEnabled = github.inputBoolean(
+        'wrapper-cache-enabled',
+        true
+    )
+    const distributionsCacheEnabled = github.inputBoolean(
+        'distributions-cache-enabled',
+        true
+    )
+    return !wrapperCacheEnabled || !distributionsCacheEnabled
 }
 
 function getCacheKey(wrapperSlug: string): string {