feat: add esm options for Nodejs

[sofisl]

Most of the files are templates, the main changes are:

• Add an ESM path to generating index.ts (necessary since import paths are changing, and since the index.ts now lives one level lower than previously)
• Add an ESM option to generate protos in es6 (soon this will be obsolete, since we moved it to the generator, but this is necessary until we remove compileProtos from here)
• Add an ESM path for templates (mainly, changing .js --> .cjs)

[snippet-bot]

Here is the summary of changes.

You are about to add 26 region tags.

• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/categoricalRiskAnalysis.js:31, tag dlp_categorical_stats
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/createInspectTemplate.js:32, tag dlp_create_inspect_template
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/createTrigger.js:35, tag dlp_create_trigger
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/deidentifyWithDateShift.js:34, tag dlp_deidentify_date_shift
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/deidentifyWithFpe.js:23, tag dlp_deidentify_fpe
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/deidentifyWithMask.js:23, tag dlp_deidentify_masking
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/deidentifyWithReplacement.js:23, tag dlp_deidentify_replacement
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/deleteInspectTemplate.js:23, tag dlp_delete_inspect_template
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/deleteJob.js:21, tag dlp_delete_job
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/deleteTrigger.js:21, tag dlp_delete_trigger
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/inspectBigQuery.js:34, tag dlp_inspect_bigquery
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/inspectDatastore.js:36, tag dlp_inspect_datastore
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/inspectFile.js:31, tag dlp_inspect_file
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/inspectGCSFile.js:33, tag dlp_inspect_gcs
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/inspectString.js:33, tag dlp_inspect_string
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/kAnonymityAnalysis.js:31, tag dlp_k_anonymity
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/kMapEstimationAnalysis.js:33, tag dlp_k_map
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/lDiversityAnalysis.js:31, tag dlp_l_diversity
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/listInspectTemplates.js:21, tag dlp_list_inspect_templates
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/listJobs.js:23, tag dlp_list_jobs
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/metadata.js:22, tag dlp_list_info_types
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/numericalRiskAnalysis.js:31, tag dlp_numerical_stats
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/quickstart.js:26, tag dlp_quickstart
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/redactImage.js:22, tag dlp_redact_image
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/redactText.js:22, tag dlp_redact_text
• tests/fixtures/nodejs_mono_repo_esm/packages/dlp/samples/reidentifyWithFpe.js:23, tag dlp_reidentify_fpe

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[sofisl]

@bcoe, would you mind taking a look whenever you have a minute? Thank you!

[SurferJeffAtGoogle]

In the pull request description, could you describe why these files are changing?

[bcoe]

I believe the majority of the node_esm_mono_repo_library files are the same as the non-ESM versions?

Could we consider giving jinja multiple search paths:

loader = FileSystemLoader(["/override/templates", "/default/templates"])

And just add the template files that differ?

If this change could be done without too much refactoring, it would make it much easier to update templates.

[bcoe]

Approving, with the suggestion that we refactor to use two template directories, so that we don't need duplicate copies of CONTRIBUTING, LICENSE, .eslintignore, etc.

[sofisl]

Approving, with the suggestion that we refactor to use two template directories, so that we don't need duplicate copies of CONTRIBUTING, LICENSE, .eslintignore, etc.

After looking into this, I'm a bit hesitant to do this because it would require refactoring this function (which renders the templates) to accept a List of template paths, vs. a string. That would affect Python and Java as well.

I've created a bug for this: #1897