chore: initial deepsource config (#556)

.deepsource.toml

@@ -0,0 +1,31 @@
+version = 1
+
+[[analyzers]]
+name = "go"
+enabled = true
+
+  [analyzers.meta]
+  import_paths = ["github.com/appleboy/gorush"]
+
+[[analyzers]]
+name = "docker"
+enabled = true
+
+  [analyzers.meta]
+  dockerfile_paths = ["docker/**"]
+
+[[analyzers]]
+name = "test-coverage"
+enabled = true
+
+[[analyzers]]
+name = "secrets"
+enabled = true
+
+test_patterns = [
+  "**/**_test.go",
+]
+
+exclude_patterns = [
+  "**/examples/**"
+]