Convert to Blazor (#6)

Convert existing progress to Blazor on client and server

src/JobsJobsJobs/Shared/Domain/Citizen.cs

@@ -0,0 +1,15 @@
+using NodaTime;
+
+namespace JobsJobsJobs.Shared
+{
+    /// <summary>
+    /// A user of Jobs, Jobs, Jobs
+    /// </summary>
+    public record Citizen(
+        CitizenId Id,
+        string NaUser,
+        string DisplayName,
+        string ProfileUrl,
+        Instant JoinedOn,
+        Instant LastSeenOn);
+}