Add EditorConfig files where we currently have consistent indentation.
This might let us get rid of our editor modeline footers at some point.
Change-Id: I156f8d25cfa0050786eb2186c4b2e6d183c3a9ce
Reviewed-on: https://code.wireshark.org/review/12383
Reviewed-by: João Valverde <j@v6e.pt>