[Blazor] Add Docker support to Blazor Web App template (#63815)

* Lights up the add docker option on VS

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/.template.config/ide.host.json

@@ -2,6 +2,7 @@
   "$schema": "https://json.schemastore.org/ide.host",
   "order": 610,
   "icon": "ide/icon.ico",
+  "supportsDocker": true,
   "disableHttpsSymbol": "NoHttps",
   "symbolInfo": [
     {