feat: cors setup using route options, removed hapi-cors plugin

[christin-wednesday]

Ticket Link

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Closes #69

Related Links

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Description

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Use the withCors function to create a route that has cors headers enabled.

Instead of using the hapi-cors plugin, use route.options.cors

Supports config overriding.

Default cors origins can be defined in the withCors function, on the basis of env.

Since it is a common use case to conditionally do something on the basis of ENVIRONMENT_NAME, added a function that guards / gate keeps the value of this environment variable.

Also this seemed like a good use case for getters :)

Steps to Reproduce / Test

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Checklist

• PR description included
• yarn test passes
• Tests are [changed or added]
• Relevant documentation is changed or added (and PR referenced)

[github-actions]

Coverage report

❌ The test suite failed. Please, check the console output for more details.

Error: The process '/usr/local/bin/npx' failed with exit code 1
    at f._setResult (/home/runner/work/_actions/artiomtr/jest-coverage-report-action/v2.0-rc.1/dist/index.js:2:11470)
    at f.CheckComplete (/home/runner/work/_actions/artiomtr/jest-coverage-report-action/v2.0-rc.1/dist/index.js:2:10900)
    at ChildProcess.<anonymous> (/home/runner/work/_actions/artiomtr/jest-coverage-report-action/v2.0-rc.1/dist/index.js:2:9944)
    at ChildProcess.emit (events.js:314:20)
    at maybeClose (internal/child_process.js:1022:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:287:5)

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