Show error in UI when registration fails (#48)

src/components/auth/register/Register.svelte

@@ -33,6 +33,8 @@
     authInProcess = true
 
     registrationSuccess = await register(username)
+
+    if (!registrationSuccess) authInProcess = false
   }
 </script>
 

src/lib/common/webnative.ts

@@ -89,6 +89,8 @@ export const isUsernameAvailable = async (
 export const register = async (username: string): Promise<boolean> => {
   const { success } = await webnative.account.register({ username })
 
+  if (!success) return success
+
   const fs = await webnative.bootstrapRootFileSystem()
   filesystemStore.set(fs)