Add multiline-comment-style lint rule and fix violations

Enable multiline-comment-style with starred-block to require JSDoc-style
block comments with content on separate lines from the opening delimiter.
Auto-fix existing violations across the codebase.

Fixes #5899

Co-authored-by: Daniel Imms <Tyriar@users.noreply.github.com>

src/common/CoreTerminal.ts

@@ -176,8 +176,10 @@ export abstract class CoreTerminal extends Disposable implements ICoreTerminal {
     x = Math.max(x, BufferServiceConstants.MINIMUM_COLS);
     y = Math.max(y, BufferServiceConstants.MINIMUM_ROWS);
 
-    // Flush pending writes before resize to avoid race conditions where async
-    // writes are processed with incorrect dimensions
+    /*
+     * Flush pending writes before resize to avoid race conditions where async
+     * writes are processed with incorrect dimensions
+     */
     this._writeBuffer.flushSync();
 
     this._bufferService.resize(x, y);