chore: Add EditorConfig (#20)

# Pull Request

## Description

This change introduces an `.editorconfig` file to the project, establishing consistent coding styles across different editors and IDEs. The configuration includes:

- UTF-8 character encoding
- LF line endings
- 2-space indentation for most files
- Insertion of a final newline
- Trimming of trailing whitespace

Specific rules are set for Python files (4-space indentation) and Markdown files (unset indentation size).

This addition will help maintain code consistency and improve collaboration among developers using different editing environments.

fixes #2

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.py]
+indent_size = 4
+
+[*.md]
+indent_size = unset