update docs for bngd features

[khorne3]

Notes for reviewers: there are a lot of docs included in the PR that can be ignored (e.g., they're just link updates, anchor tag fixes, 36ish deleted images, unused components removal, etc). Here's where you'll find info regarding the key BNGD components and where you should focus during the review:

• New filters (LOTS of pages were updated due to the new filters and related UI changes)

  • Semgrep Code
    • View findings
      • View finding details
    • Triage and remediation
  • Semgrep Supply Chain
    • View findings
      • View findings details
    • Triage and remediation
    • License compliance
    • Malicious dependencies
  • Semgrep Secrets
    • Scan for secrets
      • Scan your Git history (beta)
      • Scan for generic secrets
    • View findings
    • View finding details
    • Triage and remediation
    • Manage rules and policies

• Provisionally ignored status

  • Code triage statuses
  • Code > Triage Remediation > Review provisionally ignored findings
  • Supply Chain statuses
  • Supply Chain > Triage and remediation > Review provisionally ignored findings
  • Secrets triage statuses
  • Secrets > Triage and remediation > Review provisionally ignored findings

• Info on Priority findings vs. All findings

  • Code
  • Supply Chain
  • Secrets

• Custom priority

  • Code
  • Supply Chain
  • Secrets

Please ensure

• A subject matter expert (SME) reviews the content
• A technical writer reviews the content or PR
• This change has no security implications or else you have pinged the security team
• Redirects are added if the PR changes page URLs
• If you have changed any header tag links (doc/#this-kind-of-anchor), update all instances of that link

[netlify]

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[jsmoxon]

@khorne3 I don't see anything about the new "provisionally ignored" status. Am I just missing it? Let me know if you want me to provide a write up of what it is and how it works.

[khorne3]

@jsmoxon This was a WIP that I put on pause for a bit, so it doesn't have the provisionally ignored status info. If you could provide a write-up, that would be great. Thank you!

[abhijna]

Thanks for handling this massive project! I’ve left a few minor fix requests, but otherwise lgtm!

[jsmoxon]

Left a few comments based on initial review! Overall good but it looks like some of the Provisionally Ignored status definitions are missing for Secrets and Supply Chain?