chore: configure codacy details

Signed-off-by: Jan Kowalleck <jan.kowalleck@gmail.com>

.codacy.yaml

@@ -0,0 +1,20 @@
+# Config for Codacy
+# See https://docs.codacy.com/repositories-configure/codacy-configuration-file/
+---
+engines:
+  # engine `eslint-8` shall be disabled, since it fails due to incapability to load custom/own plugins
+  # this engine is run via CI/CT anyway...
+exclude_paths:
+  # ignore all non-shipped files
+  - "docs/dev/**"
+  - "examples/**"
+  - "tests/**"
+  - "**/*.test.*"
+  - "**/*.spec.*"
+  - "tools/**"
+  - ".*"     # dot-files
+  - ".*/**"  # dot-folders
+  # ignore vendored files
+  - "res/schema/*.xsd"
+  - "res/schema/*.schema.json"
+  - "res/schema/*.SNAPSHOT.*"