chore: Helmfile v1 compatibility

[merll]

📌 Summary

This PR renames files and updates the methods of passing arguments for forward compatibility with Helmfile v1.0.0. Changes are also compatible with pre-release versions and therefore only affect development environments for now.

Helmfile should not be updated in this PR since there are other conflicting changes pending.

🔍 Reviewer Notes

The following should be verified:

• Installing a cluster still works.
• Local otomi commands validate-templates or template work, wither with the most recent Helmfile releaes or setting HELMFILE_V1MODE=true. Outputs should be equivalent in smoke test.

🧹 Checklist

• Code is readable, maintainable, and robust.
• Unit tests added/updated

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🔴	Statements	41.37% (+0.21% 🔼)	774/1871
🔴	Branches	33.41% (+0.58% 🔼)	287/859
🔴	Functions	41% (+0.47% 🔼)	123/300
🔴	Lines	42.34% (+0.26% 🔼)	732/1729

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🔴	common/hf.ts	6.59% (-0.55% 🔻)	0%	0%	7.5% (-0.64% 🔻)

Test suite run success

93 tests passing in 9 suites.

Report generated by 🧪jest coverage report action from 3ffa280

[merll]

The GH action failed due to some leftover references to the old file extensions, but as these were fixed during the install, the job eventually completed successfully.

[Ani1357]

Tested locally and it fixes the templating issues.

[CasLubbers]

Do we also want to update the version in the Tools Docker image?