fix: Create scripts/fix/bom.sh for bill-of-materials generation

[Himanshu-370]

• Create scripts/fix/bom.sh to generate bill-of-materials.json
• Use load_workspace_relative_modules_for_bom for proper module list
• Protect go.sum and go.mod with temporary backups during generation
• Run license-bill-of-materials with GOOS=linux for consistent output
• Add ETCD_ROOT_DIR support for dynamic path resolution
• Update Makefile fix-bom target to use the new script

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Himanshu-370
Once this PR has been reviewed and has the lgtm label, please assign siyuanfoundation for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[k8s-ci-robot]

Hi @Himanshu-370. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[ivanvc]

Thanks for the pull request, @Himanshu-370. Two comments:

1. Please remove the script scripts/updatebom.sh to avoid confusion
2. There's an intentional first execution to avoid issues in a clean repository, which you didn't port. Refer to:

   etcd/scripts/updatebom.sh

   Lines 29 to 32 in c492848

   	# Intentionally run the command once first, so it fetches dependencies. The exit code on the first
   	# run in a just cloned repository is always dirty.
   	GOOS=linux run_go_tool github.com/appscodelabs/license-bill-of-materials \
   	--override-file ./bill-of-materials.override.json "${_bom_modules[@]}" &>/dev/null

[Himanshu-370]

Removed it, At first I thought we will be clearing these old files later:)