Add application services for profiles and neutrino

RecNet.Application/Common/Tokens/TokenResult.cs

@@ -0,0 +1,5 @@
+namespace RecNet.Application.Common.Tokens;
+
+public sealed record TokenResult(
+    string AccessToken,
+    int ExpiresIn);

RecNet.Application/Common/Tokens/TokenVerifyResult.cs

@@ -0,0 +1,12 @@
+namespace RecNet.Application.Common.Tokens;
+
+public sealed record TokenVerifyResult(
+    bool Succeeded,
+    Guid? ProfileId)
+{
+    public static TokenVerifyResult Success(Guid profileId)
+        => new(true, profileId);
+
+    public static TokenVerifyResult Failure()
+        => new(false, null);
+}