feat: mask sensitive keys and tokens

[foskey51]

Please answer these questions before submitting a pull request, or your PR will get closed.

Why submit this pull request?

• Bugfix
• New feature provided
• Improve performance
• Backport patches

What changes will this PR take into?

This PR addresses how sensitive fields are handled in Settings and Secrets by changing their input type to password and introducing a toggle to switch between masked and plain-text views.

Settings:

• Admin Key

Behaviour:

• Masked by default
• Toggle icon to switch b/w text view and masked view

---

Secrets (page):

• Secret Manager (section):
  • Vault
    • Token
  • AWS
    • Secret Access Key
    • Session Token
  • GCP
    • Private Key

Behaviour:

• Masked by default
• Toggle icon to switch b/w text view and masked view (available in edit mode only)

Related issues

fix/resolve #3218

Checklist:

• Did you explain what problem does this PR solve? Or what new features have been added?
• Have you added corresponding test cases?
• Have you modified the corresponding document?
• Is this PR backward compatible? If it is not backward compatible, please discuss on the mailing list first