feat(es_extended): allow users to change identifier type

[Mycroft-Studios]

Description

Allows users to change the identifier type that ESX uses

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Motivation

Cfx not communicating changes

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Implementation Details

• Adds a convar: esx:identifier
• steamlines Identifier usage
• by default its license for compatibility

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Usage Example

• set esx:identifier license2
• set esx:identifier steam

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PR Checklist

• My commit messages and PR title follow the Conventional Commits standard.
• My changes have been tested locally and function as expected.
• My PR does not introduce any breaking changes.
• I have provided a clear explanation of what my PR does, including the reasoning behind the changes and any relevant context.

[Kenshiin13]

What about esx_multicharacter/server/main.lua?

Server.identifierType = ESX.GetConfig().Identifier or GetConvar("sv_lan", "") == "true" and "ip" or GetConvar("esx:identifier", "license")

Nevermind, I'm blind.