CMRT 22: Feature: Nest Fingerprint Queue under Analyze + Status column

[Swarnadip-Kar]

Moves the Fingerprint Queue from a standalone top-level sidebar entry into
a child of the Analyze feature, and adds a single Status column to the
queue table model showing each track's AcoustID submission state.

Part A — Nest under Analyze

MusicBrainzQueueFeature is removed as a standalone feature. DlgMusicBrainzQueue
is now created by AnalysisFeature following the MixxxLibraryFeature +
DlgMissing / DlgHidden nesting pattern exactly:

• Constructor adds a "Fingerprint Queue" TreeItem child.
• bindLibraryWidget creates and registers the queue view under kQueueViewName.
• activateChild handles the child click and calls onShow().
  MusicBrainzQueueFeature class files are deleted. DlgMusicBrainzQueue and
  MusicBrainzQueueTableModel are unchanged structurally.

Part B — Status column

musicbrainz_queue_view gains a LEFT JOIN acoustid_queue to expose aq.status.
Tracks with fingerprint_valid=1 but never enqueued still appear; their
status is NULL, shown as "pending" by rawValue().

Notes for reviewers

• LEFT JOIN acoustid_queue is intentional. Tracks with a valid fingerprint
  but no queue row still appear; this makes the view a complete picture of
  unmatched fingerprints, not just queued ones.
• kQueueViewName = "MusicBrainzQueue" matches the string already used by
  DlgMusicBrainzQueue::onShow() from CMRT 18 so no view state is lost.
• rawValue() falls through to BaseSqlTableModel::rawValue() for every column
  except COL_STATUS, so standard library column behaviour is unchanged.
• DROP VIEW IF EXISTS before CREATE ensures schema changes from development
  take effect without requiring a Mixxx restart.

Future work (not in this PR)

• Live sidebar count update after worker drains the queue (planned).
• MusicBrainz ID links in DlgTrackInfo fingerprint tab (planned).

Depends on: cmrt-worker-mbid-fields (#27)

[coveralls]

Coverage Report for CI Build 27523987007

Coverage decreased (-0.006%) to 30.453%

Details

• Coverage decreased (-0.006%) from the base build.
• Patch coverage: 33 uncovered changes across 2 files (5 of 38 lines covered, 13.16%).
• 2 coverage regressions across 2 files.

Uncovered Changes

File	Changed	Covered	%
src/library/musicbrainzqueue/musicbrainzqueuetablemodel.cpp	20	0	0.0%
src/library/analysis/analysisfeature.cpp	18	5	27.78%

Coverage Regressions

2 previously-covered lines in 2 files lost coverage.

File	Lines Losing Coverage	Coverage
src/library/analysis/analysisfeature.cpp	1	14.86%
src/library/musicbrainzqueue/musicbrainzqueuetablemodel.cpp	1	0.0%

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Coverage Stats

Relevant Lines:	116176
Covered Lines:	35379
Line Coverage:	30.45%
Coverage Strength:	59284.1 hits per line

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💛 - Coveralls