feat: Exclude External Disks from Analyze

[iamxorum]

Created optional flag --exclude-volumes for mo analyze to consent the users to analyze the filesystem without taking in consideration attached Volumes. Normal behaviour (with volumes included) is left untouched.

Issue: #426

[15:32] iamxorum@xrm-mac-pro ~/Desktop/XRM/Personal/Contributions/Mole git:(feat-426)
➜ ./bin/analyze-go --exclude-volumes

[15:32] iamxorum@xrm-mac-pro ~/Desktop/XRM/Personal/Contributions/Mole git:(feat-426)
➜ ./bin/analyze-go

[tw93]

@iamxorum Thanks for the contribution and for raising this pain point.
I merged the PR first, then refined the UX in follow-up:

• We removed the --exclude-volumes flag to keep mo analyze simple.
• Overview now skips /Volumes by default for faster startup.
• If users want external drives, they can run mo analyze /Volumes (or a specific mounted path).
  So the same goal is preserved, with fewer flags and cleaner CLI behavior.

[iamxorum]

Looks good, at the end is your product, you know better what you want to be like ;)