add documentation for lifecycle hooks

[gsquared94]

Related: #1441
http://35.236.30.3:1313/docs/pipeline-stages/lifecycle-hooks/

[container-tools-bot]

Please visit http://35.236.30.3:1313 to view changes to the docs.

[codecov]

Codecov Report

Merging #6330 (adde167) into main (1c5e0a8) will decrease coverage by 0.22%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #6330      +/-   ##
==========================================
- Coverage   70.80%   70.57%   -0.23%     
==========================================
  Files         494      496       +2     
  Lines       22325    22457     +132     
==========================================
+ Hits        15807    15850      +43     
- Misses       5498     5584      +86     
- Partials     1020     1023       +3     

Impacted Files	Coverage Δ
pkg/skaffold/docker/tracker/tracker.go	82.75% <0.00%> (-2.54%)	⬇️
pkg/skaffold/docker/image.go	65.44% <0.00%> (-1.11%)	⬇️
pkg/skaffold/docker/parse.go	87.39% <0.00%> (-0.85%)	⬇️
pkg/skaffold/schema/validation/validation.go	86.24% <0.00%> (-0.66%)	⬇️
pkg/skaffold/event/v2/event.go	84.64% <0.00%> (-0.22%)	⬇️
pkg/skaffold/runner/deployer.go	58.25% <0.00%> (ø)
pkg/skaffold/deploy/docker/deploy.go	0.00% <0.00%> (ø)
pkg/skaffold/schema/latest/v1/config.go	62.16% <0.00%> (ø)
pkg/skaffold/sync/docker.go	71.42% <0.00%> (ø)
pkg/skaffold/deploy/docker/port.go	22.50% <0.00%> (ø)
... and 4 more

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[MarlonGamez]

For some reason when looking at the preview docs there is a bug with the page footer not being at the bottom of the page

I'm not sure if this is somehow an issue with the PR, but it seems to only happen on the lifecycle hooks page

[MarlonGamez]

Looking good, just have a couple small questions regarding some lines

[aaron-prindle]

LGTM