feat: adds support to generate passwords

[gizmo-rt]

Motivation
#11875 (comment)

Tests

Closes #11875

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[anshulsharma-hashicorp]

@gizmo-rt now this looks better, one last thing for all the datasource we have in packer we have a doc page as well, which explains that datasource use-case and required fields etc. for this please go through the http datasource https://github.com/hashicorp/packer/blob/main/website/content/docs/datasources/http.mdx?plain=1 and it's equivalent doc on web https://developer.hashicorp.com/packer/docs/datasources/http. Please add this into your same PR.

[anshulsharma-hashicorp]

📄 Content Checks

Updated: Wed, 07 May 2025 17:12:54 GMT

Found 4 error(s)

@gizmo-rt could you please fix above mentioned 4 errors

Changes done.

[anshulsharma-hashicorp]

LGTM

[anshulsharma-hashicorp]

Vercel permission we need to check.

Also your imports are not in correct order in following files due to which lint check is breaking please check this
datasource/password/data.go:9
datasource/password/utility.go:9
@gizmo-rt

[gizmo-rt]

@anshulsharma-hashicorp What is the plan to move this to main ?

[gizmo-rt]

@kp2099 @anurag5sh ^