Qual: Add yamlfix configuration

Add a yamlfix configuration so that it can be adapted to
the project's preferences

pyproject.toml

@@ -26,3 +26,25 @@ uri-ignore-words-list="ned"
 
 [tool.setuptools]
 include-package-data = false
+
+# pyproject.toml
+
+[tool.yamlfix]
+# allow_duplicate_keys = true
+line_length = 80
+# none_representation = "null"
+# comments_min_spaces_from_content = 2
+# comments_require_starting_space = true
+# whitelines = 0
+# comment_whitelines = 0
+# section_whitelines = 0
+# explicit_start = true
+# sequence_style = keep_style   # flow_style, block_style, keep_style
+# indent_mapping = 2
+# indent_offset = 2
+# indent_sequence = 4
+# none_representation = ""
+# quote_basic_values = false
+# YAMLFIX_quote_keys_and_basic_values = false
+# uote_representation = false
+# preserve_quotes = false