Updates for fetching flow run and task run logs

[huzaifmalik786]

No description provided.

[Ishankoradia]

One task from the issue is still left to be done. @huzaifmalik786 please take a look at this #148
We need another api here to separate logs from the graph in get_flow_run_logs_v2.

Idea is to create a new api get_flow_run_graph which is exactly same as /proxy/flow_runs/v1/logs/{flow_run_id} but doesn't return the logs only the graph or you can set the logs to []

Were you planning to do it in another PR ?

[huzaifmalik786]

@Ishankoradia , I was assigned to this issue.
DalgoT4D/DDP_backend#789
So, this PR is for the changes mentioned in this particular ticket only.
Let's take up the issue mentioned above in another PR.