chore: add editorconfig (#24)

Author: oneanupam

.editorconfig

@@ -0,0 +1,50 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+# Unix-style newlines at the bottom of every file
+end_of_line = lf
+charset = utf-8
+
+# indentation style and size
+indent_style = space
+indent_size = 2
+
+# Make sure every file has a blank line at the end
+insert_final_newline = true
+
+# Remove any whitespace characters preceding newline characters
+trim_trailing_whitespace = true
+
+# Give operators breathing room, but not brackets
+spaces_around_operators = true
+spaces_around_brackets = false
+
+# 4 space indentation
+[*.{py,java}]
+indent_size = 4
+
+[*.json]
+indent_size = 4
+
+# 2 space indentation
+[*.{js,html}]
+indent_size = 2
+
+[*.{tf}]
+indent_size = 2
+
+[*.rb]
+indent_size = 2
+
+[*.yml]
+indent_size = 2
+
+[*.yaml]
+indent_size = 2
+
+[*.{md}]
+indent_size = unset
+trim_trailing_whitespace = false