Make CacheResourcesManager Constructor used for test package protected (

#1702)

It looks like the CacheResourcesManager(Cache cache) constructor is oly
used for test, so this is made package protected now.

This has the advantage that there is no public reference to google Cache
API making it an internal implementation detail that can easily be
exchanged.

Signed-off-by: Christoph Läubrich <laeubi@laeubi-soft.de>

org.eclipse.lemminx/src/main/java/org/eclipse/lemminx/uriresolver/CacheResourcesManager.java

@@ -144,7 +144,7 @@ public CacheResourcesManager() {
 		this(CacheBuilder.newBuilder().maximumSize(100).expireAfterWrite(30, TimeUnit.SECONDS).build());
 	}
 
-	public CacheResourcesManager(Cache<String, CacheResourceDownloadedException> cache) {
+	CacheResourcesManager(Cache<String, CacheResourceDownloadedException> cache) {
 		resourcesLoading = new HashMap<>();
 		protocolsForCache = new HashSet<>();
 		unavailableURICache = cache;