docs: Add DataHub HowTo

[sbalnojan]

Added a how for the data hub utility.

[netlify]

✅ Deploy Preview for meltano ready!

Name	Link
🔨 Latest commit	fad84c3
🔍 Latest deploy log	https://app.netlify.com/sites/meltano/deploys/632bfa5b2d0eb1000cac16c0
😎 Deploy Preview	https://deploy-preview-6709--meltano.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[codecov]

Codecov Report

Merging #6709 (e7310ad) into main (5c81e0a) will decrease coverage by 0.05%.
The diff coverage is n/a.

❗ Current head e7310ad differs from pull request most recent head fad84c3. Consider uploading reports for the commit fad84c3 to get more accurate results

@@            Coverage Diff             @@
##             main    #6709      +/-   ##
==========================================
- Coverage   88.60%   88.55%   -0.06%     
==========================================
  Files         280      280              
  Lines       20260    20226      -34     
  Branches     2002     2002              
==========================================
- Hits        17952    17911      -41     
- Misses       1972     1979       +7     
  Partials      336      336              

Impacted Files	Coverage Δ
src/meltano/core/schedule_service.py	88.65% <0.00%> (-3.80%)	⬇️
src/meltano/core/error.py	83.33% <0.00%> (-2.78%)	⬇️
src/meltano/core/project_plugins_service.py	89.83% <0.00%> (-1.61%)	⬇️
src/meltano/cli/utils.py	81.59% <0.00%> (-1.05%)	⬇️
tests/meltano/core/test_schedule_service.py	93.16% <0.00%> (-0.29%)	⬇️
tests/meltano/core/test_environment_variables.py	96.51% <0.00%> (-0.20%)	⬇️
src/meltano/core/utils/__init__.py	89.44% <0.00%> (-0.05%)	⬇️
src/meltano/api/app.py	87.35% <0.00%> (ø)
tests/meltano/cli/test_cli.py	100.00% <0.00%> (ø)
src/meltano/core/settings_store.py	94.61% <0.00%> (+0.04%)	⬆️
... and 1 more

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[tayloramurphy]

@sbalnojan I like the content of this, but I'm not sure it's right for the Meltano Docs. I think this either needs to be a blog post or a Tutorial. Having it in the Guide section puts an overemphasis on DataHub in particular when compared to the ELT functionality.

Some of the could also live in https://hub.meltano.com/utilities/datahub but likely we should link from the Hub to where this doc winds up living.

@afolson your thoughts on this?

[sbalnojan]

@tayloramurphy mh you think? I mean I agree, we shouldn't overemphasize one plugin, but that just means, we definitely need way more How Tos and not just this one.

DataHub is a great complement to ELT (as is Great Expectations), and I think it would be really helpful to have all the information in one place (the docs).

Do you really want to redirect someone to some other place to answer the simple "how do I use DataHub with Meltano" question?

But, I would like to propose a restructuring anyways, putting this and 1-2 more pieces into a dedicated "How To" section (specific answers to specific problems while I'm working it). And restructure the "Guides" section into a Tutorial + Getting Started Section. I just thought that belongs into a separate PR.

[tayloramurphy]

@sbalnojan fair points. I do think the overall information architecture of the docs could take another iteration. My main point is that I don't think it's right for the current guide section and it seems like "Tutorials" would be better.

But, I would like to propose a restructuring anyways, putting this and 1-2 more pieces into a dedicated "How To" section (specific answers to specific problems while I'm working it). And restructure the "Guides" section into a Tutorial + Getting Started Section. I just thought that belongs into a separate PR.

I like that and I wouldn't be opposed to having that PR come in first, but that's primarily because of the pain of having to redirect if/when the URL changes.

My recommendation would either to update this PR to move the new content to Tutorials and then have the new PR update the structure or vice versa and wait to get this merged.

[sbalnojan]

@tayloramurphy I forgot to tag you @tayloramurphy and I feel like all conversations have been resolved.

[tayloramurphy]

Great iteration - let's ship it and add more! 😄