chore: improve channel messaging and address memory leaks (#1687)

### Motivation
The channel messaging system (as well as a few network parts in general)
really need a cleanup to improve the code quality and reliability of the
system. Furthermore, there were memory leaks reported that need to be
addressed as well.

### Modification
This pr mostly improves channel messaging to be more reliable overall
and improves the api surface exposed to consumers. Furthermore, all
possible memory leaks were addressed (not limited to channel messaging)
and some other networking parts were improved as well.

### Result
Channel messaging should be more reliable and easier to use.
Additionally, there shouldn't be any memory leaks anymore.

Author: derklaro

driver/api/src/main/java/eu/cloudnetservice/driver/channel/ChannelMessage.java

@@ -25,11 +25,11 @@
 
 /**
  * Represents a sender of a channel message. A channel message sender is not required to be the actual component sending
- * the message nor is there a requirement for the name to match the driver environment when creating a new target. But
+ * the message, nor is there a requirement for the name to match the driver environment when creating a new target. But
  * it is strongly recommended to not mismatch information as it may lead to confusing results on the receiver site.
  * <p>
- * Note: It is not recommended using the constructor directly. Consider using either {@link #self()} if you want a jvm
- * static sender representing the current network component or {@link  #of(String, DriverEnvironment)} if you want to
+ * Note: It is not recommended using the constructor directly. Consider using either {@link #self()} if you want a
+ * sender instance representing the current network component or {@link #of(String, DriverEnvironment)} if you want to
  * create a sender for another network component.
  *
  * @param name the name of the new sender.
@@ -68,7 +68,7 @@ public record ChannelMessageSender(@NonNull String name, @NonNull DriverEnvironm
    *
    * @param serviceInfoSnapshot the service to check.
    * @return true if this sender represents the given service, false otherwise.
-   * @throws NullPointerException if the given snapshot is null.
+   * @throws NullPointerException if the given service snapshot to compare to is null.
    */
   public boolean is(@NonNull ServiceInfoSnapshot serviceInfoSnapshot) {
     return this.type.equals(DriverEnvironment.WRAPPER) && this.name.equals(serviceInfoSnapshot.name());
@@ -79,7 +79,7 @@ public boolean is(@NonNull ServiceInfoSnapshot serviceInfoSnapshot) {
    *
    * @param node the node to check.
    * @return true if this sender represents the given node, false otherwise.
-   * @throws NullPointerException if the given input is null.
+   * @throws NullPointerException if the given node to compare to is null.
    */
   public boolean is(@NonNull NetworkClusterNode node) {
     return this.type.equals(DriverEnvironment.NODE) && this.name.equals(node.uniqueId());
@@ -93,9 +93,7 @@ public boolean is(@NonNull NetworkClusterNode node) {
    * @return a new {@link ChannelMessageTarget} based on the information of this sender.
    */
   public @NonNull ChannelMessageTarget toTarget() {
-    var type = this.type.equals(DriverEnvironment.NODE)
-      ? ChannelMessageTarget.Type.NODE
-      : ChannelMessageTarget.Type.SERVICE;
-    return new ChannelMessageTarget(type, this.name);
+    var isNode = this.type.equals(DriverEnvironment.NODE);
+    return isNode ? ChannelMessageTarget.node(this.name) : ChannelMessageTarget.service(this.name);
   }
 }