feat(callback): add AwaitClientCallback function

[Mirrrrrow]

Description

Adds the ESX.AwaitClientCallback function.
#1628

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Motivation

To match ESX.AwaitServerCallback and just personal preference.

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Implementation Details

Added the same logic that is used on the client-side to await the server callbacks.

Usage Example

local data = ESX.AwaitClientCallback(source, 'test:client:receiveData', false)
print(json.encode(data))

Which can be seen equivalent to

ESX.TriggerClientCallback(source, 'test:client:receiveData', function(data)
    print(json.encode(data))
end)

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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.

[Zykem]

LGTM, thanks!

[Mirrrrrow]

Well I was in the wrong branch the last commit wasn't inteded 😂 I reverted it sorry

[Zykem]

LGTM

[Mirrrrrow]

Are the PRs merged when a new version is beeing released or before? Messed up something with my branches and I don't want to break something again here lmao

[Mirrrrrow]

Any updates?

[Zykem]

Documentation update regarding your Pull Request.
esx-framework/esx-legacy-documentation@bb8acad