feat(classes/player) Add "getAccountMoney" method

[Zykem]

Description

Adds a new method getAccountMoney to the xPlayer object to retrieve the current money amount of a specified account. This simplifies fetching account balances directly from the player object.

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Motivation

Currently, retrieving the money of a player’s account requires calling getAccount and then accessing the money field. Adding getAccountMoney provides a more straightforward, readable, and convenient way to get account balances, improving code clarity.

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Implementation Details

• Added a new function xPlayer.getAccountMoney(accountName) that returns the money value of the specified account.
• The method returns nil if the account does not exist.
• This method internally calls the existing getAccount method and safely accesses the money field.

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Usage Example

local money = xPlayer.getAccountMoney("bank")
if money then
    print(("Player has %d in bank account"):format(money))
else
    print("Account not found")
end

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PR Checklist

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

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1 out of 4 committers have signed the CLA.

✅ Kenshiin13
❌ Kr3mu
❌ Zykem
❌ github-actions[bot]
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