refactor: integrate global Medal.tv auto-clipping & remove local implementation

[rwixy]

Description

Removes the local, standalone Medal.tv auto-clipping assets and scripts from esx_ambulancejob and refactors the death clip trigger to consume the centralized global xLib.medal module.

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Motivation

Previously, esx_ambulancejob maintained its own local NUI files (html/medal.html, html/medal.js), dedicated client script (client/medal.lua), and duplicate configuration blocks to handle saving clips upon player death. Centralizing the Medal.tv functionality inside esx_lib allows esx_ambulancejob to decouple itself from standalone clip logic, cleaning up the resource structure and aligning with the global library standards.

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Implementation Details

• Cleaned Assets: Deleted local NUI files html/medal.html and html/medal.js and removed their declarations from fxmanifest.lua.

• Script Removal: Deleted client/medal.lua and removed its reference.

• Centralized configuration: Removed the Config.Medal configuration block from config.lua to prevent configuration redundancy.

• Library Import: Added @esx_lib/imports.lua to shared_scripts in fxmanifest.lua to give the resource access to the global xLib helper modules.

• Refactored Death Clip: Simplified TriggerMedalDeathClip() in client/main.lua to call xLib.medal.triggerClip() without arguments, offloading all clip invocation, API details, and default settings to esx_lib.

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Usage Example

-- TriggerMedalDeathClip has been simplified to delegate directly to the global esx_lib API
function TriggerMedalDeathClip()
  xLib.medal.triggerClip()
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.