Add .vscode/ and .vscode-server/ auto-generated
folders to .gitignore.

Change-Id: I2def20c694247f24b881a749419fcd8346554f20
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/86190
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/.gitignore b/.gitignore
index 414cb29..2e2ba13 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,6 +25,8 @@
 /tools/skia_goldctl
 /v8
 /xcodebuild
+.vscode/
+.vscode-server/
 .DS_Store
 .gclient
 .gclient_entries