Added editorconfig and xaml styler config files

Author: 0x5bfa

.editorconfig

@@ -0,0 +1,11 @@
+root = true
+
+[**/*.cs]
+indent_style = tab
+indent_size = 4
+tab_width = 4
+
+[**/*.xaml]
+indent_style = tab
+indent_size = 4
+tab_width = 4

Settings.XamlStyler

@@ -0,0 +1,3 @@
+{
+  "IndentWithTabs":  true
+}