feat: Show execution create time in execution detail page

[xwk1246]

TL;DR

issue: flyteorg/flyte:2511
add create time and rename time to start time in execution detail page

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Complete description

1. add create time and rename time to start time in execution detail page

Tracking Issue

flyteorg/flyte#2511

Follow-up issue

NA
OR
https://github.com/flyteorg/flyte/issues/

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (a162fb0) 63.17% compared to head (ff8853f) 63.18%.

Files	Patch %	Lines
.../Executions/ExecutionDetails/ExecutionMetadata.tsx	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #841   +/-   ##
=======================================
  Coverage   63.17%   63.18%           
=======================================
  Files         528      528           
  Lines       13449    13452    +3     
  Branches     2567     2569    +2     
=======================================
+ Hits         8497     8499    +2     
- Misses       4952     4953    +1     

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