chore(k8s): enhance k8s scan log

[haojingcn]

Description

Discussed in #6932

In short, progress bar may lead someone(like me) confused. It show the download progress or scan image progress or scan K8s progress.

Related issues

• Close Add log message for avoid confusion about the progress bar #6996

Related PRs

• #XXX
• #YYY

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• I've added tests that prove my fix is effective or that my feature works.
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[github-actions]

This PR is stale because it has been labeled with inactivity.

[afdesk]

Honestly, the progress bar confused me too.
so maybe it makes sense to merge this PR.

[afdesk]

@haojingcn LGTM! thanks!

[afdesk]

@haojingcn The idea is good, but i see a sample.
what if we remove additoinal text: (nextline show the progress)?
it'll look like Downloading DB:

2024-08-28T12:21:35+06:00	INFO	[db] Downloading DB...	repository="ghcr.io/aquasecurity/trivy-db:2"
52.46 MiB / 52.46 MiB [----------------------------------------------------------------------------------------------------------------------------------------] 100.00% 3.8

[github-actions]

This PR is stale because it has been labeled with inactivity.

[afdesk]

@haojingcn LGTM! thanks!