fix: enable noImplicitAny and fix resulting type errors

[tambien]

I have enabled noImplicitAny: true in tsconfig.json and fixed all resulting TypeScript errors across the Tone/ source and test/ directories.

Key changes include:

• Core Source Files: Added explicit types for parameters, return values, and members in classes like Transport, Sampler, Frequency, and ToneEvent.
• Base Classes: In classes like ToneWithContext, as any was used for dynamic property access in get() and set() methods to maintain simplicity and avoid complex generics, as requested.
• Utility Functions: Fixed potential bugs in Context.dispose() (iterating a Map) and made omitFromObject non-mutating.
• Tests: Fixed implicit any errors in numerous test files and updated test helper signatures. Added test/types.d.ts to provide basic declarations for untyped third-party modules (array2d, plotly.js-dist, etc.).
• Validation: Verified that tsc --noEmit passes with no errors and that the core test group passes successfully.

Efforts were made to minimize the use of any, but it remains in situations involving dynamic property indexing or complex class inheritance where the "simplest solution" was prioritized over architectural changes.

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PR created automatically by Jules for task 17956039260356736605 started by @tambien

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