Added go generate in workflow

[yindia]

TL;DR

• Added check for verify go-gen, it will fail if contributor forget to generate code

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

How did you fix the bug, make the feature etc. Link to any design docs etc

Tracking Issue

flyteorg/flyte#1872

Follow-up issue

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

[codecov]

Codecov Report

Merging #111 (aa61529) into master (74a775b) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #111      +/-   ##
==========================================
- Coverage   68.00%   67.97%   -0.04%     
==========================================
  Files          65       65              
  Lines        3216     3216              
==========================================
- Hits         2187     2186       -1     
- Misses        863      864       +1     
  Partials      166      166              

Flag	Coverage Δ
unittests	66.57% <ø> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
sets/generic_set.go	98.91% <0.00%> (-1.09%)	⬇️

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[yindia]

@pmahindrakar-oss Need +1