chore: add transformer to MonoVertex example

[vigith]

Based on user request on the ex.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.24%. Comparing base (2017f0c) to head (3b086eb).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1935      +/-   ##
==========================================
+ Coverage   57.96%   58.24%   +0.28%     
==========================================
  Files         401      401              
  Lines       27769    27769              
==========================================
+ Hits        16095    16174      +79     
+ Misses      10743    10665      -78     
+ Partials      931      930       -1     

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[kohlisid]

2024-08-13T18:16:36.831801Z  INFO Read batch size: 500 and latency - 2ms
2024-08-13T18:16:36.845226Z  INFO Transformer latency - 13ms
2024-08-13T18:16:36.862412Z  INFO Sink latency - 17ms
2024-08-13T18:16:36.863297Z  INFO Ack latency - 0ms
2024-08-13T18:16:36.864789Z  INFO Read batch size: 500 and latency - 1ms
2024-08-13T18:16:36.877946Z  INFO Transformer latency - 13ms
2024-08-13T18:16:36.894761Z  INFO Sink latency - 16ms
2024-08-13T18:16:36.895666Z  INFO Ack latency - 0ms
2024-08-13T18:16:36.895677Z  INFO Forwarded 15500 messages at time 2024-08-13 18:16:36.895677142 UTC
2024-08-13T18:16:36.897122Z  INFO Read batch size: 500 and latency - 1ms
2024-08-13T18:16:36.911895Z  INFO Transformer latency - 14ms
2024-08-13T18:16:36.928537Z  INFO Sink latency - 16ms
2024-08-13T18:16:36.929535Z  INFO Ack latency - 0ms
2024-08-13T18:16:36.931104Z  INFO Read batch size: 500 and latency - 1ms
2024-08-13T18:16:36.944937Z  INFO Transformer latency - 13ms
2024-08-13T18:16:36.966619Z  INFO Sink latency - 21ms
2024-08-13T18:16:36.967615Z  INFO Ack latency - 0ms
2024-08-13T18:16:36.969082Z  INFO Read batch size: 500 and latency - 1ms
2024-08-13T18:16:36.982251Z  INFO Transformer latency - 13ms
2024-08-13T18:16:36.998401Z  INFO Sink latency - 16ms
2024-08-13T18:16:36.999279Z  INFO Ack latency - 0ms
2024-08-13T18:16:37.000842Z  INFO Read batch size: 500 and latency - 1ms
2024-08-13T18:16:37.014800Z  INFO Transformer latency - 13ms
2024-08-13T18:16:37.032363Z  INFO Sink latency - 17ms
2024-08-13T18:16:37.033219Z  INFO Ack latency - 0ms
2024-08-13T18:16:37.035565Z  INFO Read batch size: 500 and latency - 2ms
2024-08-13T18:16:37.049433Z  INFO Transformer latency - 13ms

[kohlisid]

Events:
  Type     Reason     Age                  From               Message
  ----     ------     ----                 ----               -------
  Normal   Scheduled  116s                 default-scheduler  Successfully assigned default/simple-mono-vertex-mv-0-sravp to kind-control-plane
  Normal   Pulled     116s                 kubelet            Container image "quay.io/numaproj/numaflow:latest" already present on machine
  Normal   Created    116s                 kubelet            Created container numa
  Normal   Started    115s                 kubelet            Started container numa
  Normal   Pulled     115s                 kubelet            Container image "quay.io/numaio/numaflow-java/source-simple-source:stable" already present on machine
  Normal   Created    115s                 kubelet            Created container udsource
  Normal   Started    115s                 kubelet            Started container udsource
  Normal   Pulling    115s                 kubelet            Pulling image "quay.io/numaio/numaflow-rs/source-transformer-now:stable"
  Normal   Pulled     112s                 kubelet            Successfully pulled image "quay.io/numaio/numaflow-rs/source-transformer-now:stable" in 2.742s (2.742s including waiting)
  Normal   Created    112s                 kubelet            Created container transformer
  Normal   Started    112s                 kubelet            Started container transformer
  Normal   Pulled     112s                 kubelet            Container image "quay.io/numaio/numaflow-java/simple-sink:stable" already present on machine
  Normal   Created    112s                 kubelet            Created container udsink