[DOCS] Enable docs versioning for 0.16.16

[anthonyburdi]

Enable docs versioning for 0.16.16 as we prepare to release 0.17.0 by doing the following:

• Temporarily set onBrokenLinks to 'warn' instead of 'throw' until the broken links listed below are able to be addressed.
• Handle an import with an absolute path: '/components/warnings/_cli_removal.md'
• Set NODE_OPTIONS in both netlify and azure-pipelines-docs.yml to avoid JavaScript heap out of memory errors (see also [email protected] Build failure (JavaScript heap out of memory) gatsbyjs/gatsby#15190).
• Update versioning instructions to temporarily change onBrokenLinks since we reference earlier versions (which will not be available during docs versioning).
• Increase deprecation warning threshold.

The following will need to be addressed in future PRs:

• Fix the broken links in the list below from a recent stack trace.
• Handle all imports with absolute paths (not just '/components/warnings/_cli_removal.md').
• Remove deprecated code and reduce the threshold to 0.

7:03:18 PM: [ERROR] Unable to build website for locale en.
7:03:18 PM: [ERROR] Error: Docusaurus found broken links!
7:03:18 PM: 
7:03:18 PM: Please check the pages of your site in the list below, and make sure you don't reference any path that does not exist.
Note: it's possible to ignore broken links with the 'onBrokenLinks' Docusaurus configuration, and let the build pass.
7:03:18 PM: Exhaustive list of all broken links found:
7:03:18 PM: 
7:03:18 PM: - On source page path = /docs/0.16.16/deployment_patterns/how_to_use_gx_with_aws/how_to_use_gx_with_aws_using_athena:
7:03:18 PM:    -> linking to ../../../../docs/guides/validation/index.md#checkpoints (resolved as: /docs/guides/validation/index.md)
7:03:18 PM:    -> linking to ../../../../docs/guides/validation/index.md#actions (resolved as: /docs/guides/validation/index.md)
7:03:18 PM: 
7:03:18 PM: - On source page path = /docs/0.16.16/deployment_patterns/how_to_use_gx_with_aws/how_to_use_gx_with_aws_using_cloud_storage_and_pandas:
7:03:18 PM:    -> linking to ../../../../docs/guides/validation/index.md#checkpoints (resolved as: /docs/guides/validation/index.md)
7:03:18 PM:    -> linking to ../../../../docs/guides/validation/index.md#actions (resolved as: /docs/guides/validation/index.md)
7:03:18 PM: 
7:03:18 PM: - On source page path = /docs/0.16.16/deployment_patterns/how_to_use_gx_with_aws/how_to_use_gx_with_aws_using_redshift:
7:03:18 PM:    -> linking to ../../../../docs/guides/validation/index.md#checkpoints (resolved as: /docs/guides/validation/index.md)
7:03:18 PM:    -> linking to ../../../../docs/guides/validation/index.md#actions (resolved as: /docs/guides/validation/index.md)
7:03:18 PM: 
7:03:18 PM: - On source page path = /docs/0.16.16/deployment_patterns/how_to_use_gx_with_aws/how_to_use_gx_with_aws_using_s3_and_spark:
7:03:18 PM:    -> linking to ../../../../docs/guides/validation/index.md#checkpoints (resolved as: /docs/guides/validation/index.md)
7:03:18 PM:    -> linking to ../../../../docs/guides/validation/index.md#actions (resolved as: /docs/guides/validation/index.md)

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