chore: Add .editorconfig for better IDE experience

.editorconfig

@@ -0,0 +1,25 @@
+root = true
+
+[*]
+tab_width = 4
+insert_final_newline = true
+
+[*.{xaml,xml,targets,props,csproj,cs,tt,java,ts,json}]
+indent_style = tab
+tab_width = 4
+indent_size = 4
+
+[*.js]
+indent_style = space
+
+[*.css]
+indent_style = space
+tab_width = 2
+indent_size = 2
+
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2
+
+[*.md]
+indent_style = space