fix(js): add missing projectType property to @nrwl/js:library generator

[lucasvieirasilva]

Current Behavior

When the @nrwl/js:library generates the project, the project.json doesn't have the property projectType: library.

Expected Behavior

When the @nrwl/js:library generator creates the project, the projectType: library property should be in the project.json or workspace.json

Related Issue(s)

Fixes #10158

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✅ Successfully ran 12 targets

• nx affected --target=build --base=e212cb9fe143759b6e9afd3a87ba8312251bc3ce --head=801084592c224c7dfa7c838de12ca5836122d09f --parallel=3
• nx affected --target=e2e --base=e212cb9fe143759b6e9afd3a87ba8312251bc3ce --head=801084592c224c7dfa7c838de12ca5836122d09f --exclude=e2e-detox,e2e-js,e2e-next,e2e-workspace-create,e2e-workspace-integrations,e2e-workspace-core,e2e-react,e2e-web,e2e-angular-extensions,e2e-angular-core,e2e-cli,e2e-nx-plugin,e2e-cypress,e2e-node,e2e-linter,e2e-jest,e2e-a...
• nx affected --target=e2e --base=e212cb9fe143759b6e9afd3a87ba8312251bc3ce --head=801084592c224c7dfa7c838de12ca5836122d09f --exclude=e2e-storybook,e2e-react-native,e2e-detox --parallel=1
• nx affected --target=lint --base=e212cb9fe143759b6e9afd3a87ba8312251bc3ce --head=801084592c224c7dfa7c838de12ca5836122d09f --parallel=3
• nx affected --target=test --base=e212cb9fe143759b6e9afd3a87ba8312251bc3ce --head=801084592c224c7dfa7c838de12ca5836122d09f --parallel=1
• nx build typedoc-theme
• nx-cloud record -- yarn check-commit
• nx-cloud record -- yarn check-imports
• nx-cloud record -- yarn depcheck
• nx-cloud record -- yarn documentation
• nx-cloud record -- yarn nx format:check --base=e212cb9fe143759b6e9afd3a87ba8312251bc3ce --head=801084592c224c7dfa7c838de12ca5836122d09f
• nx-cloud record -- yarn nx workspace-lint

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