Add .editorconfig to enforce coding styles (#647)

* Add .editorconfig to enforce coding styles

This commit introduces an .editorconfig file to help maintain consistent coding styles across different editors and IDEs. It includes rules for:

- End-of-line characters (lf)
- Final newline insertion
- Trailing whitespace trimming
- Character set (utf-8 for js, py, go, sh)
- Indentation styles (spaces for Python, YAML, Markdown; tabs for Makefiles, Go)

Includes a reference link to editorconfig.org at the top of the file.

* Update .editorconfig

don't trim trailing whitespaces for the markdown files to allow two-space line-breaks

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

---------

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: 3 people

.editorconfig

@@ -0,0 +1,27 @@
+# https://editorconfig.org/
+
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{js,py,go,sh}]
+charset = utf-8
+
+[*.py]
+indent_style = space
+indent_size = 4
+
+[*.{yaml,yml,md}]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+[Makefile]
+indent_style = tab
+
+[*.go]
+indent_style = tab