chore: add .editorconfig for consistent coding styles across files (#32261)

Following existing codebase conventions

.editorconfig

@@ -0,0 +1,52 @@
+# top-most EditorConfig file
+root = true
+
+# All files
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# Python files
+[*.py]
+indent_style = space
+indent_size = 4
+max_line_length = 88
+
+# JSON files
+[*.json]
+indent_style = space
+indent_size = 2
+
+# YAML files
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2
+
+# Markdown files
+[*.md]
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = false
+
+# Configuration files
+[*.{toml,ini,cfg}]
+indent_style = space
+indent_size = 4
+
+# Shell scripts
+[*.sh]
+indent_style = space
+indent_size = 2
+
+# Makefile
+[Makefile]
+indent_style = tab
+indent_size = 4
+
+# Jupyter notebooks
+[*.ipynb]
+# Jupyter may include trailing whitespace in cell
+# outputs that's semantically meaningful
+trim_trailing_whitespace = false