Start item number from 1 instead of 0

[dmijatovic]

The list item number start from 1 instead of 0

Closes #130

Changes made:

• useIndexable hook returns item index + 1 value
• Tests are updated
• Added npm script test:headed to haddock3-download app to view integration tests locally

How to test:

• The change can be validated via storybook
• All test are passing (unit & integration tests)

[netlify]

✅ Deploy Preview for i-vresse-workflow-builder ready!

Name	Link
🔨 Latest commit	cecb743
🔍 Latest deploy log	https://app.netlify.com/sites/i-vresse-workflow-builder/deploys/65c49c062ef86700083bdc19
😎 Deploy Preview	https://deploy-preview-136--i-vresse-workflow-builder.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 configuration.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2699ae2) 66.68% compared to head (f1efcc4) 66.74%.
Report is 2 commits behind head on main.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #136      +/-   ##
==========================================
+ Coverage   66.68%   66.74%   +0.05%     
==========================================
  Files          57       57              
  Lines        4049     4065      +16     
  Branches      336      337       +1     
==========================================
+ Hits         2700     2713      +13     
- Misses       1345     1348       +3     
  Partials        4        4              

Flag	Coverage Δ
core-unit	63.79% <ø> (+0.08%)	⬆️
form-unit	78.50% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
packages/form/src/useIndexable.ts	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

[sverhoeven]

Overall looks good to me.

Nice, this also updated indexeable for tablefield, see http://localhost:6007/?path=/story/tablefield--array-of-object-with-index-column

I do however have some consistency remarks:

Can you also update the docs?
At https://github.com/i-VRESSE/workflow-builder/blob/130-start-list-with-1/docs/uiSchema.md?plain=1#L146 the 3 should be changed to 4.

[sverhoeven]

Great thanks for the contribution.