feat(angular): add support for incremental builds to the webpack-server executor

[leosvelperez]

Current Behavior

The @nrwl/angular:webpack-server executor doesn't support incremental builds.

Expected Behavior

The @nrwl/angular:webpack-server executor supports incremental builds.

Related Issue(s)

Fixes #

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✅ Successfully ran 11 targets

• nx affected --target=e2e --base=9900ceb7c4c5ea147436bcaf828f50e4b1fab770 --head=3cdbd2b74bd06dde8170214746644c2ed5e8b78e --exclude=e2e-storybook,e2e-react-native,e2e-detox --parallel=1
• nx affected --target=test --base=9900ceb7c4c5ea147436bcaf828f50e4b1fab770 --head=3cdbd2b74bd06dde8170214746644c2ed5e8b78e --parallel=1
• nx affected --target=build --base=9900ceb7c4c5ea147436bcaf828f50e4b1fab770 --head=3cdbd2b74bd06dde8170214746644c2ed5e8b78e --parallel=3
• nx affected --target=lint --base=9900ceb7c4c5ea147436bcaf828f50e4b1fab770 --head=3cdbd2b74bd06dde8170214746644c2ed5e8b78e --parallel=3
• nx-cloud record -- yarn nx workspace-lint
• nx-cloud record -- yarn documentation
• nx build typedoc-theme
• nx-cloud record -- yarn depcheck
• nx-cloud record -- yarn check-commit
• nx-cloud record -- yarn nx format:check --base=9900ceb7c4c5ea147436bcaf828f50e4b1fab770 --head=3cdbd2b74bd06dde8170214746644c2ed5e8b78e
• nx-cloud record -- yarn check-imports

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Name	Status	Preview	Updated
nx-dev	✅ Ready (Inspect)	Visit Preview	Jun 16, 2022 at 11:23AM (UTC)

[Coly010]

LGTM! 🎉

[Coly010]

LGTM! 🎉

[github-actions]

This pull request has already been merged/closed. If you experience issues related to these changes, please open a new issue referencing this pull request.