📎 noRestrictedGlobals: add an option for a custom message

[dyc3]

Description

From #4721.

Currently, the noRestrictedGlobals rule in Biome does not provide the ability to include a custom message explaining why a global variable is restricted. Users should be able to optionally specify a custom message for violations of this rule. Something like:

// biome.jsonc
{
    "options": {
        "deniedGlobals": [
            {
                "ident": "$",
                "message": "jQuery is not allowed. Use native DOM manipulation instead."
            },
            {
                "ident": "someGlobal",
                "message": "someGlobal shouldn't be used because..."
            }
        ]
    }
}

Once we decide on the config ergonomics, this could easily earn a good first issue label.

[ematipico]

I have two other suggestions:

• align the option to this option https://biomejs.dev/linter/rules/no-restricted-imports/#_top (which is unfortunate because the current opinion is an array...)
• use the proposed suggestion, but change ident to variable/variableName/globalName. ident is a non-beginner term

[Conaclos]

use the proposed suggestion, but change ident to variable/variableName/globalName. ident is a non-beginner term

I could opt for globalName or just name because this also covers type names.

Anyway, if we align top the other we don't even need a name because it is already called deniedGlobals :)

// biome.jsonc
{
    "options": {
        "deniedGlobals": {
            "$": "jQuery is not allowed. Use native DOM manipulation instead.",
            "someGlobal": "someGlobal shouldn't be used because..."
        }
    }
}

Question: should we deprecate arrays for deniedGlobals?

[ematipico]

Question: should we deprecate arrays for deniedGlobals?

Since we are working towards v2, we could just break it and provide a migration.