ACNA-976 - feat: add new app event hooks for custom build scripts

[shazron]

Fixes #339

How Has This Been Tested?

• npm test
• add build-actions and/or build-static run scripts in package.json for your app, run aio app build
• add deploy-actions and/or deploy-static run scripts in package.json for your app, run aio app deploy

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov]

Codecov Report

Merging #340 (5d2b00d) into master (5be4f39) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #340   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           30        30           
  Lines         1305      1329   +24     
  Branches       213       219    +6     
=========================================
+ Hits          1305      1329   +24     

Impacted Files	Coverage Δ
src/commands/app/build.js	100.00% <100.00%> (ø)
src/commands/app/deploy.js	100.00% <100.00%> (ø)

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[purplecabbage]

Lgtm!
Why the long timeout?

[Himavanth]

LGTM. Just two minor comments.

• Jesse's comment on timeout
• Should we make skip-static and skip-actions mutually exclusive just like skip-deploy and skip-build ? (would be a breaking change in another PR anyway)

[shazron]

Lgtm!
Why the long timeout?

ah, no need for the timeout actually after my tests. I thought some tests were failing because of timeout.

[shazron]

Should we make skip-static and skip-actions mutually exclusive

I agree. Like you mentioned this would be a breaking change so let's do it in another PR.
The only remote use-case I can see why someone would want to use both flags is if they want the pre and post hooks to run for some reason.