Add EditorConfig

[jrobind]

Adding an .editorconfig file will help to maintain consistent coding styles for contributors working on the project across various editors and IDEs.

Here is an example config:

# stop .editorconfig files search on current file.
root = true

# Unix-style newlines with a newline ending every file
[*]
charset = utf-8
end_of_line = lf
insert_final_newline = true
indent_style = tab
indent_size = 2
trim_trailing_whitespace = true

Please see the docs for more information

[RoseKimball]

Hi, I can work on this issue