Update ID generation logic to add dash between prefix and number

[Copilot]

This PR addresses an issue with ID generation logic in the Keyborg library. Currently, IDs are generated using a letter prefix followed by an incrementing number, but this approach can lead to conflicts when multiple versions of the library are loaded in the same context.

Changes

• Modified the ID generation in KeyborgCore constructor from "c" + ++_lastId to "c-" + ++_lastId
• Modified the ID generation in Keyborg private constructor from "k" + ++_lastId to "k-" + ++_lastId

Benefits

• Adds a dash separator between prefix and number, making IDs more distinguishable
• Reduces potential for ID conflicts when multiple versions of the library are loaded
• Makes the library more robust in complex application scenarios
• Maintains backward compatibility with existing functionality
• Changes are minimal and focused only on ID generation format

Testing

The changes have been verified through:

• Successful linting checks
• Successful build
• Bundle size verification (no significant impact)

This improvement helps avoid issues in applications that might load multiple versions of Keyborg, while keeping the implementation simple and maintaining the existing functionality.

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