Added Initial Support for Cassandra DB

problem/rfc-0021-CassandraDBsupport.md

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+# Added Initial Support for Cassandra DB <!-- What do you want to call your `awesome_feature`? -->
+
+- Implementation Owner: (your github @roshangeorge97)
+
+## Summary
+
+[summary]: #summary
+
+
+Added the basic Initial Support for Cassandra DB, Methods from the Utopia PHP class have been utilized to the maximum. Unit Tests have been ran for getSession() method. A blog on the setup have been published on Hashnode.
+
+## Problem Statement (Step 1)
+
+[problem-statement]: #problem-statement
+
+**What problem are you trying to solve?**
+
+The Problem was apart of Github Octernship program.
+
+### Documentation & Content
+
+Published Blog : [Adding the Cassandra DB Support to Appwrite](https://cryptophase.hashnode.dev/adding-the-cassandra-db-support-to-appwrite)
+
+
+### Future possibilities
+
+[future-possibilities]: #future-possibilities
+
+- Getting all the functions in Utopia PHP classes applicable
+