chore: add EditorConfig

Signed-off-by: strawberry <strawberry@puppygock.gay>

.editorconfig

@@ -0,0 +1,15 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+tab_width = 4
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+max_line_length = 120
+
+[*.nix]
+indent_size = 2