Update instance level templates to use ndjson formatted files

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Problem

Currently, all instance wide templates located @ vendor/project_templates are using legacy JSON formatted files. Each of the templates need to be updated to use ndjson formatted files, since legacy json format is going away #232633 (closed)

Proposed solution

Update instance template with new ndjson format. This will ensure once #232633 (closed) is done and legacy format is removed, it won't break instance templates.

It can be done by:

1. Creating a new project via instance level template
2. Exporting created project, this will generate new archive using ndjson
3. Replacing existing template @ vendor/project_templates with a new one

There are 25 templates to update, so it might be better to do this transition in batches, processing 5 templates per MR.