Add core linter

[drwpow]

Changes

Part of #225

Adds a buncha new rules to @cobalt-ui/core out-of-the-box:

Rule	Default	Description
duplicate-values	"warn"	Enforce no tokens have duplicate values.
naming	"off"	Enforce all token names follow a specific style (e.g. kebab-case or camelCase)
required-children	"off"	Enforces matching groups have required children.
required-modes	"off"	Enforces matching tokens have required modes.
color/format	"off"	Enforce color tokens are declared in a certain format (e.g. oklch).
color/gamut	"warn"	Enforce color tokens are displayable within the specified gamut (srgb, p3, or rec2020).
typography/required-properties	"off"	Enforce typography tokens have specific properties (e.g. fontWeight).

Also adds a new Linting guide to take full advantage of these checks

How to Review

• Tests added; tests should pass

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 27f071579db59e6b5533f42a4b1f7c1d0b12f0e8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

| Name | Type | | -------------------------- | ----- | | @cobalt-ui/utils | Patch | | @cobalt-ui/core | Minor | | @cobalt-ui/cli | Minor | | @cobalt-ui/plugin-css | Major | | @cobalt-ui/plugin-js | Major | | @cobalt-ui/plugin-sass | Major | | @cobalt-ui/plugin-tailwind | Major | | @cobalt-ui/lint-a11y | Major |

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