.vscodeignore: skip tools/ directory

And, sort the entries.

Change-Id: I6e8cd12ccbcee23821e47005f8e04578ee6db41e
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/241601
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
diff --git a/.vscodeignore b/.vscodeignore
index b122d37..c33036f 100644
--- a/.vscodeignore
+++ b/.vscodeignore
@@ -1,19 +1,19 @@
-test/
-third_party/
-typings/
-.vscode/
-tsconfig.json
-.gitignore
 **/*.map
 **/tslint.json
-build/
-docs/
-*.md.nightly
 .github/**/*
+.gitignore
 .prettierrc.json
 .vscode-test/**
+.vscode/
 SECURITY.md
+build/
+docs/
 node_modules
 out/
 src/
+test/
+third_party/
+tools/
+tsconfig.json
+typings/
 webpack.config.js