It's possible to have Cent Browser's own web store

[Admini]

Thanks for your kind suggestion.
However we don't have many users, so we can't bring many users to the extensions in our web store.
If you are developing only for yourself, you can use "Load unpacked" in chrome://extensions/
You can develop an user script instead of an extension if possible, like those on https://greasyfork.org/en/scripts