Add an .editorconfig

Author: SRombautsU

.editorconfig

@@ -0,0 +1,14 @@
+[*]
+charset=utf-8
+end_of_line=lf
+trim_trailing_whitespace=true
+insert_final_newline=true
+indent_style=space
+indent_size=4
+
+[{*.json,*.csproj,*.yml}]
+end_of_line=crlf
+indent_size=2
+
+[{Makefile.*}]
+indent_style=tab