.editordonfig: Add editorconfig config file

Author: Pavel Siska

.editorconfig

@@ -0,0 +1,17 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+
+[Makefile]
+indent_style = tab
+
+[{CMakeLists.txt,*.cmake}]
+indent_style = tab
+
+[*.{yaml,yml}]
+indent_style = space
+indent_size = 2