docs: add logo

Author: judithspd

docs/source/index.rst

@@ -1,4 +1,8 @@
-ANJANA
+.. image:: https://raw.githubusercontent.com/IFCA-Advanced-Computing/anjana/main/images/anjana_logo.png
+   :align: center
+   :width: 400px
+
+Anonymity as major assurance of personal data privacy
 =============================================================================
 
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