feat: Add succinct description

Add the description to address sindresorhus/awesome#3003 (comment)

README.md

@@ -6,6 +6,8 @@
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 A curated list of awesome applications, tools, and resources for [Google Cloud](https://cloud.google.com).
 
+Google Cloud is a suite of modular cloud services including computing, data storage, data analytics, and machine learning, alongside a set of management tools.
+
 If you are new to Google Cloud, there is a [free trial](https://cloud.google.com/free-trial/) to try it out.
 
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