Update cheatsheets

firebase

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# firebase
+
+> Test, manage, and deploy Firebase projects.
+> More information: <https://github.com/firebase/firebase-tools>.
+
+- Log in to <https://console.firebase.google.com>:
+
+`firebase login`
+
+- List existing Firebase projects:
+
+`firebase projects:list`
+
+- Start an interactive wizard to create a Firebase project in the current directory:
+
+`firebase init`
+
+- Deploy code and assets to the current Firebase project:
+
+`firebase deploy`
+
+- Start a local server to statically host the current Firebase project's assets:
+
+`firebase serve`
+
+- Start an interactive wizard to open one of many links of the current Firebase project in the default web browser:
+
+`firebase open`