[Feature]: replay in trace viewer

[chensce]

🚀 Feature Request

When the test run is end,I want to replay the running to debug the test script.
1)move the filmstrip panel from the top to the bottom;
2)add the play/pause control button
3)the same as the movie editor in mac os `x.```

Example

it is open moment:

it is pause moment:

the movie is :

my-1.mov

Motivation

When the test run is end,I want to replay the running to debug the test script.

[mxschmitt]

Usually we recommend to manually to jump to the position where you are interested in rather than clicking on play/pause.

[chensce]

yes,now it is awesome!thank you for your great work.
if we could replay ,it is more awesome!