Add Sonar (#14)

* Add Sonar

* Fix code smells

.github/archive/.deepsource.toml

@@ -0,0 +1,30 @@
+version = 1
+
+test_patterns = ["tests/**"]
+
+exclude_patterns = [
+  ".github/workflows/**",
+  ".gitignore",
+  "CODEOWNERS",
+  "LICENSE.md",
+  "README.md",
+  "codecov.yml",
+  "renovate.json",
+  "requirements-dev.txt",
+  "requirements.txt"
+]
+
+[[analyzers]]
+name = "python"
+enabled = true
+
+  [analyzers.meta]
+  runtime_version = "3.x.x"
+
+[[analyzers]]
+name = "test-coverage"
+enabled = true
+
+[[transformers]]
+name = "black"
+enabled = true

.github/archive/codecov.yml

@@ -0,0 +1,2 @@
+ignore:
+  - "*/tests/*”