fix: fixup invalid command sender message (#799)

Motivation
The invalid command sender message is currently not showing the required sender as the argument was escaped by the surrounding '.

Modification
Fixup the escape of the message arguments, as well as fixing the message to correctly reflect what it is meant to show. This requires to override the toString method in all registered command senders to get a human readable name of the sender during formatting.

Result
The invalid command sender message shows up correctly.

node/src/main/java/eu/cloudnetservice/node/command/source/ConsoleCommandSource.java

@@ -30,7 +30,7 @@ public class ConsoleCommandSource implements CommandSource {
   private static final Logger LOGGER = LogManager.logger(ConsoleCommandSource.class);
 
   /**
-   * @return "Console" for the console command source.
+   * {@inheritDoc}
    */
   @Override
   public @NonNull String name() {
@@ -74,4 +74,12 @@ public void sendMessage(@NonNull Collection<String> messages) {
   public boolean checkPermission(@NonNull String permission) {
     return true;
   }
+
+  /**
+   * {@inheritDoc}
+   */
+  @Override
+  public @NonNull String toString() {
+    return this.name();
+  }
 }

node/src/main/java/eu/cloudnetservice/node/command/source/DriverCommandSource.java

@@ -38,7 +38,7 @@ public class DriverCommandSource implements CommandSource {
   private final Collection<String> messages = new ArrayList<>();
 
   /**
-   * @return "Driver" for the driver command source.
+   * {@inheritDoc}
    */
   @Override
   public @NonNull String name() {
@@ -86,6 +86,17 @@ public boolean checkPermission(@NonNull String permission) {
     return this.messages;
   }
 
+  /**
+   * {@inheritDoc}
+   */
+  @Override
+  public @NonNull String toString() {
+    return this.name();
+  }
+
+  /**
+   * {@inheritDoc}
+   */
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,6 +108,9 @@ public boolean equals(Object o) {
     return that.name().equals(this.name());
   }
 
+  /**
+   * {@inheritDoc}
+   */
   @Override
   public int hashCode() {
     return Objects.hash(this.name());

node/src/main/java/eu/cloudnetservice/node/permission/command/PermissionUserCommandSource.java

@@ -60,4 +60,12 @@ public PermissionUserCommandSource(
   public boolean checkPermission(@NonNull String permission) {
     return this.permissionManagement.hasPermission(this.permissionUser, Permission.of(permission));
   }
+
+  /**
+   * {@inheritDoc}
+   */
+  @Override
+  public @NonNull String toString() {
+    return this.name();
+  }
 }

node/src/main/resources/lang/en_US.properties

@@ -119,7 +119,7 @@ cloudnet-post-unload-module=Module {0$module_group$}:{1$module_name$}:{2$module_
 command-no-description=No command description provided
 command-confirmation-no-requests=There are no commands to confirm
 command-confirmation-required=Please confirm executing the command by executing ''&bconfirm&r'' within 30s
-invalid-command-sender=This command can be executed using the '{0$source$}' only
+invalid-command-sender=This command cannot be executed by ''{0$source$}''
 invalid-command-syntax=Invalid syntax! Use {0$syntax$}
 no-such-command=Command could not be found! For help, use the command "help"
 argument-parse-failure-no-input-was-provided=No input provided