Leica name normalization (DNG only)

[kmilos]

AFAICT, these cameras output only DNG, so this is just to normalize the make and model strings.

Leica M (Typ 262)
Leica M-D (Typ 262)
Leica S (Typ 007)
Leica S2
Leica S3
Leica T (Typ 701)
Leica TL
Leica TL2
Leica X1
Leica X Vario (Typ 107)
Leica X (Typ 113)
Leica X-U (Typ 113)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (bec30b6) 60.92% compared to head (3be16ff) 60.92%.

Additional details and impacted files

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##           develop     #646   +/-   ##
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  Coverage    60.92%   60.92%           
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  Files          266      266           
  Lines        15960    15960           
  Branches      2046     2046           
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  Hits          9723     9723           
  Misses        6105     6105           
  Partials       132      132           

Flag	Coverage Δ
benchmarks	10.66% <ø> (ø)
integration	46.11% <ø> (ø)
linux	57.33% <ø> (ø)
macOS	24.28% <ø> (ø)
rpu_u	46.11% <ø> (ø)
unittests	21.63% <ø> (ø)
windows	∅ <ø> (∅)

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[LebedevRI]

@kmilos thank you!
I have not verified that these changes are correct, only did a visual inspection of the diff.

[kmilos]

I managed to find quite a few of these DNG samples on either DPReview or PhotographyBlog to test, but not all...