refactoring (#178)

* unify components import

* refactor config and app context

* refactor icons

* refactor date, error, mxid and storage

* refactor synapse utils

src/utils/error.ts

@@ -0,0 +1,6 @@
+export type MatrixError = {
+	errcode: string;
+	error: string;
+}
+
+export const displayError = (errcode: string, status: number, message: string) => `${errcode} (${status}): ${message}`;