Add supportsANSIStyling capabilities to allow colorization of text from debug adapters

Author: jansorg

org.eclipse.lsp4j.debug/src/main/java/org/eclipse/lsp4j/debug/DebugProtocol.xtend

@@ -261,7 +261,15 @@ class OutputEventArguments {
 	String category;
 	/**
 	 * The output to report.
-	 */
+	 * <p>
+	 * ANSI escape sequences may be used to influence text color and styling if
+	 * `supportsANSIStyling` is present in both the adapter's `Capabilities` and
+	 * the client's `InitializeRequestArguments`. A client may strip any
+	 * unrecognized ANSI sequences.
+	 * <p>
+	 * If the `supportsANSIStyling` capabilities are not both true, then the
+	 * client should display the output literally.
+     */
 	@NonNull
 	String output;
 	/**
@@ -913,6 +921,12 @@ class InitializeRequestArguments {
 	 * Since 1.59
 	 */
 	Boolean supportsStartDebuggingRequest;
+	/**
+	 * The client will interpret ANSI escape sequences in the display of
+	 * `OutputEvent.output` and `Variable.value` fields when
+	 * `Capabilities.supportsANSIStyling` is also enabled.
+	 */
+	Boolean supportsANSIStyling;
 }
 
 /**
@@ -2849,6 +2863,11 @@ class Capabilities {
 	 * Since 1.65
 	 */
 	BreakpointMode[] breakpointModes;
+	/**
+	 * The debug adapter supports ANSI escape sequences in styling of
+	 * `OutputEvent.output` and `Variable.value` fields.
+	 */
+	Boolean supportsANSIStyling;
 }
 
 /**