build: add .editorconfig for viewing files on GitHub

.editorconfig

@@ -0,0 +1,20 @@
+#
+# Note: 
+# The code in this project is formatted with Prettier. However, we can use an .editorconfig file 
+# to customize how GitHub presents source code files.
+#
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+# Matches multiple files with brace expansion notation
+[*.{ts,tsx,js,jsx}]
+charset = utf-8
+indent_style = tab
+indent_size = 2
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false