Fix #24075 (first part): new instrument (Castilian dulzaina) linked to oboe soundfont

[pacebes]

Resolves: #24075 (first part)

The issue aims to add a new Castilian (Spanish) woodwind instrument with a new SoundFont. It may take a while until new SoundFonts could be added to MuseScore. Therefore, I have created a first PR which adds the new instrument to MuseScore.

Changes:

• New family has been created: Dulzaina
• A new subcategory has been added: Castilian. There are Castilian dulzainas, Aragonese dulzainas
• A new instrument (fsharp-castilian-dulzaina) with transposition in F# has been added as there may also be g-castilian-dulzaina with transposition in G

• I signed the CLA
• The title of the PR describes the problem it addresses
• Each commit's message describes its purpose and effects, and references the issue it resolves
• If changes are extensive, there is a sequence of easily reviewable commits
• The code in the PR follows the coding rules
• There are no unnecessary changes
• The code compiles and runs on my machine, preferably after each commit individually
• I created a unit test or vtest to verify the changes I made (if applicable)