feat(curriculum): add musical instrument workshop (#61750)

Co-authored-by: Dario <105294544+Dario-DC@users.noreply.github.com>
Co-authored-by: Ilenia M <nethleen@gmail.com>
Co-authored-by: Ilenia <26656284+ilenia-magoni@users.noreply.github.com>

client/i18n/locales/english/intro.json

@@ -4496,9 +4496,11 @@
         "title": "Classes and Objects",
         "intro": ["Learn about Classes and Objects in these lectures."]
       },
-      "workshop-placeholder-classes-and-objects": {
-        "title": "Placeholder - waiting for title",
-        "intro": [""]
+      "workshop-musical-instrument-inventory": {
+        "title": "Build a Musical Instrument Inventory",
+        "intro": [
+          "In this workshop, you will learn about classes, objects, and methods in Python by building a simple musical instrument inventory."
+        ]
       },
       "lab-budget-app": {
         "title": "Build a Budget App",

client/src/pages/learn/full-stack-developer/workshop-musical-instrument-inventory/index.md

@@ -0,0 +1,9 @@
+---
+title: Introduction to the Build a Musical Instrument Inventory
+block: workshop-musical-instrument-inventory
+superBlock: full-stack-developer
+---
+
+## Introduction to the Build a Musical Instrument Inventory
+
+In this workshop, you will learn about classes, objects, and methods in Python by building a simple musical instrument inventory.