feat(scale_pattern): ✨ add double harmonic major scale

[JulioJamon54]

• feat(scale_pattern): ✨ add double harmonic major scale

• test(scale_pattern): 🧪 add test cases for double harmonic major scale

[albertms10]

Great, thanks for your quick and efficient contribution!

Just one aspect: is there any Double harmonic minor scale at all? If so, adding it to this PR would be great, too! 😸

[coveralls]

Pull Request Test Coverage Report for Build 8759271536

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 8730428655:	0.0%
Covered Lines:	1158
Relevant Lines:	1158

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💛 - Coveralls

[JulioJamon54]

Thank you!
There is a double harmonic minor scale, but I think it is most commonly called hungarian minor scale:
https://en.wikipedia.org/wiki/Hungarian_minor_scale
Do you want me to add it anyway? 😄

[albertms10]

Great, thanks for the research! (and apologies for the ignorance)

It seems curious at first that the Double harmonic minor scale is also called Hungarian minor, but the Hungarian major scale is not the same as the former Double harmonic major scale. 😅—Please correct me if I’m wrong!

Given this naming convention is more complex than I expected, I would just add the Double harmonic major scale, sticking to the initial PR goal. Sorry for the noise!