Update .npmignore (#1062)

This patch updates `.npmignore` to exclude files not needed in the npm package.

Fix: #1061

Author: minggangw

.npmignore

@@ -1,17 +1,18 @@
-generated/
-Dockerfile
-appveyor.yml
-.travis.yml
 .coveralls.yml
-.gitmodules
-.circleci
 .clang-format
-.eslintrc.yml
 .istanbul.yml
+.gitignore
+.prettierrc.yml
+eslint.config.mjs
+CONTRIBUTORS.md
+Dockerfile
 cpplint.py
-tsconfig.json
+suppr.txt
+types/interfaces.d.ts
+generated/
 build/
 dist/
+electron_demo/
 log/
 install/
 test/
@@ -21,6 +22,4 @@ benchmark/
 tutorials/
 .github/
 .vscode/
-.gitignore
-.prettierrc.yml
 .husky/