Add .deepsource.toml

Signed-off-by: shubhendra <withshubh@gmail.com>

.deepsource.toml

@@ -0,0 +1,12 @@
+version = 1
+
+test_patterns = ["**/tests/test_*.py"]
+
+exclude_patterns = ["docs/**"]
+
+[[analyzers]]
+name = "python"
+enabled = true
+
+  [analyzers.meta]
+  runtime_version = "3.x.x"