feat: Linter rule for enforcing the use of game:GetService()

[NatFletch]

As a Roblox Developer, I'd like to request a new linter rule that warns when developers try to directly access services (eg: game.Players) instead of using the preferred way which is using game:GetService("Players").

Disallow direct property access:

local Players = game.Players
local ReplicatedStorage = game.ReplicatedStorage

Require GetService() to access services

local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")

Rationale:

• game:GetService() matches Roblox's recommended coding practices
• Allows developers to have consistent looking code
• It is safer to use game:GetService() as sometimes directly accessing services may not exist yet

Potential Implementation:

• A linter rule named roblox_incorrect_service_get
• Detect code that uses game.<ServiceName> when <ServiceName> is a real Roblox service