Change the router to use peerDependency for fast-element (#7053)

# Pull Request

## 📖 Description

The `@microsoft/fast-router` is erroneously using `@microsoft/fast-element` as a direct dependency, this is causing issues during publishing and is the incorrect dependency structure for the package.

## ✅ Checklist

### General

<!--- Review the list and put an x in the boxes that apply. -->

- [ ] I have included a change request file using `$ npm run change`
- [ ] I have added tests for my changes.
- [ ] I have tested my changes.
- [ ] I have updated the project documentation to reflect my changes.
- [x] I have read the [CONTRIBUTING](https://github.com/microsoft/fast/blob/master/CONTRIBUTING.md) documentation and followed the [standards](https://github.com/microsoft/fast/blob/master/CODE_OF_CONDUCT.md#our-standards) for this project.

change/@microsoft-fast-router-86ba00b4-329b-480f-a226-77947ce80499.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Change the router to use peerDependency for fast-element",
+  "packageName": "@microsoft/fast-router",
+  "email": "[email protected]",
+  "dependentChangeType": "none"
+}

packages/web-components/fast-router/package.json

@@ -48,6 +48,7 @@
   "devDependencies": {
     "@jsdevtools/coverage-istanbul-loader": "^3.0.5",
     "@microsoft/api-extractor": "^7.47.0",
+    "@microsoft/fast-element": "^2.0.0",
     "@types/chai": "^4.2.11",
     "@types/karma": "^6.3.3",
     "@types/mocha": "^7.0.2",
@@ -80,7 +81,7 @@
     "webpack": "^5.92.1",
     "webpack-cli": "^5.1.4"
   },
-  "dependencies": {
+  "peerDependencies": {
     "@microsoft/fast-element": "^2.0.0"
   },
   "beachball": {