nodenv: add page (#4659)

pages/common/nodenv.md

@@ -0,0 +1,28 @@
+# nodenv
+
+> A tool to manage NodeJS versions.
+> More information: <https://github.com/nodenv/nodenv>.
+
+- Install a specific version of Node.js:
+
+`nodenv install {{version}}`
+
+- Display a list of available versions:
+
+`nodenv install --list`
+
+- Use a specific version of Node.js across the whole system:
+
+`nodenv global {{version}}`
+
+- Use a specific version of Node.js with a directory:
+
+`nodenv local {{version}}`
+
+- Display the Node.js version for the current directory:
+
+`nodenv version`
+
+- Display the location of a Node.js installed command (e.g. `npm`):
+
+`nodenv which {{command}}`