Support targeting multiple scopes in a theme with tree sitter

[alexr00]

No description provided.

[alexr00]

The identifiers are the scopes in a them rule. In this example, they are the scope property here:

{
			"name": "Function declarations",
			"scope": [
				"entity.name.function",
				"support.function",
				"support.constant.handlebars",
				"source.powershell variable.other.member",
				"entity.name.operator.custom-literal"
			],
			"settings": {
				"foreground": "#DCDCAA"
			}
		},

The scopes are the scopes that the token we're trying to find the theme for has. In this code snippet:

new URL('./../../renderer/dist/index.html', import.meta.url);

URL has the following scopes from tree sitter:

new.expr
variable
entity.name.function

By using the identifierIndex the score was using the position of the scope in the theme rule as to calculate the score, and I'm unclear on the intent behind this. Why would it's position in the theme rule influence the score?

This change instead uses the position of the scope in the token's scope list as part of the score, with scopes that are more specific getting greater weight.