Add server without specifying a protocol

[flwst]

I added the ability for users to be able to add servers without specifying any protocol, as mentioned in issue #1688.

Pull Request: #1694

Original

• The user was not allowed to press the "connect" button if the server URL does not start with "http://" or "https://"

Changes

• the REGEX expression in the mustBeUrl function has been modified to accept IP addresses without ports or protocols
• A default value of "http://" and a port of 8096 are added if they are not present in the URL.

Example

123.101.5.1, https://123.101.5.1, and 123.101.5.1:8096 are all converted to http://123.101.5.1:8096 before there is an attempt to establish a connection. URLs that contain a protocol and port are left intact.

Also, this is my first ever contribution to an open-source project.

[ferferga]

This is already implemented since the introduction of @jellyfin/sdk