display survey prompt which points to survey url

[tejal29]

Relates to #3010

Description

User facing changes

yes
Before
no prompt displayed.

After
When hooked up the following prompt should get displayed

Help improve Skaffold! Take a 10 seconds anonymous survey.
    $ skaffold survey

Next PRs.

• Add a skaffold config survey/disable_prompts to display prompts
• Add implementation for skaffold survey command which opens the "https://forms.gle/BMTbGQXLWSdn7vEs6"
• Add logic show once in 2 weeks untill user ran skaffold survey command.

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• Includes unit tests
• Mentions any output changes.
• [ n/a] Adds documentation as needed: user docs, YAML reference, CLI reference.
• [ n/a] Adds integration tests if needed.

See the contribution guide for more details.

Double check this list of stuff that's easy to miss:

• If you are adding a example to the examples dir, please copy them to integration/examples
• Every new example added in integration/examples dir, should be tested in integration test

Reviewer Notes

• The code flow looks good.
• Unit test added.
• User facing changes look good.

Release Notes

[codecov]

Codecov Report

Merging #3011 into master will increase coverage by 0.08%.
The diff coverage is 100%.

Impacted Files	Coverage Δ
pkg/skaffold/survey/survey.go	100% <100%> (ø)
pkg/skaffold/docker/auth.go	55.76% <0%> (-7.03%)	⬇️
pkg/skaffold/build/custom/custom.go	62.5% <0%> (-1.44%)	⬇️
pkg/skaffold/runner/build_deploy.go	66.19% <0%> (-0.95%)	⬇️
pkg/skaffold/runner/diagnose.go	12.85% <0%> (-0.58%)	⬇️
pkg/skaffold/kubernetes/context/context.go	100% <0%> (ø)	⬆️
pkg/skaffold/build/misc/graceful.go	66.66% <0%> (ø)
pkg/skaffold/kubernetes/status_check.go	76.19% <0%> (ø)
pkg/skaffold/schema/profiles.go	88.57% <0%> (+0.13%)	⬆️
... and 7 more