feat: update tokens for better documentation (#8395)

**Related Issue:** #8315

## Summary

This PR updates tokens to include a "calcite-schema" in each token's
attributes. This schema fully defines the token and it's role in the
design system. It also changes the Docs output to always stringify the
token value and fix the filePath to be relative to the tokens directory.

Author: alisonailea

packages/calcite-design-tokens/package.json

@@ -30,7 +30,6 @@
     "lint:json": "prettier --write \"**/*.json\" >/dev/null",
     "lint:md": "markdownlint \"**/*.md\" --fix --dot --ignore-path ../../.gitignore && prettier --write \"**/*.md\" >/dev/null",
     "lint:ts": "eslint --ext .ts,.tsx --fix . && prettier --write \"**/*.ts?(x)\" >/dev/null",
-    "lint": "concurrently npm:lint:*",
-    "test": "jest"
+    "lint": "concurrently npm:lint:*"
   }
 }

packages/calcite-design-tokens/src/component/button.json

@@ -0,0 +1,30 @@
+{
+  "component": {
+    "button": {
+      "background": {
+        "type": "color",
+        "value": "{semantic.color.background.default}",
+        "attributes": {
+          "calcite-schema": {
+            "system": "calcite",
+            "tier": "component",
+            "domain": "",
+            "component": "button",
+            "pattern": "",
+            "element": "",
+            "category": "color",
+            "group": "",
+            "kind": "",
+            "appearance": "",
+            "property": "background",
+            "variant": "",
+            "state": "",
+            "scale": "",
+            "context": "",
+            "mode": ""
+          }
+        }
+      }
+    }
+  }
+}