Add in plotly sample project

Plotly does have an e2e test, but I wanted to be able to check the styling of it after the 3.3 upgrade

Author: zetter-rpf

src/projects/python-plotly.json

@@ -0,0 +1,19 @@
+{
+  "identifier": "python-plotly",
+  "project_type": "python",
+  "locale": "en",
+  "name": "Python Plotly",
+  "user_id": null,
+  "instructions": null,
+  "components": [
+    {
+      "id": "42b4cdc9-d935-4a3d-b39a-32eb44c3ebfe",
+      "name": "main",
+      "extension": "py",
+      "content": "import plotly.express as px\ndf = px.data.gapminder().query(\"country=='Canada'\")\nfig = px.line(df, x=\"year\", y=\"lifeExp\", title='Life expectancy in Canada')\nfig.show()"
+    }
+  ],
+  "image_list": [],
+  "videos": [],
+  "audio": []
+}

src/web-component.html

@@ -63,6 +63,7 @@
       <a href="#" data-project="cool-html">cool-html</a>
       <a href="#" data-project="blank-python-starter">blank-python-starter</a>
       <a href="#" data-project="cool-python">cool-python</a>
+      <a href="#" data-project="python-plotly">python-plotly</a>
       <a href="#" data-project="blank-scratch">blank-scratch</a>
     </div>
     <div id="editor-component"></div>