feat: need exposure onMathClick for math node.

[FrankLiu007]

I am using a math editor (mathlive) to edit math object, I need exposure of onMathClick method.

[Tsuzat]

Look into https://tiptap.dev/docs/editor/extensions/nodes/mathematics for more details.

You can use the options in

Edra/src/lib/edra/extensions.ts

Lines 92 to 101 in 8f973db

	Mathematics.configure({
	// Options for the KaTeX renderer. See here: https://katex.org/docs/options.html
	katexOptions: {
	throwOnError: true, // don't throw an error if the LaTeX code is invalid
	macros: {
	'\\R': '\\mathbb{R}', // add a macro for the real numbers
	'\\N': '\\mathbb{N}' // add a macro for the natural numbers
	}
	}
	}),

or, remove the math extension from extension.ts in your codebase and initialise it in https://github.com/Tsuzat/Edra/blob/next/src/lib/edra/headless/editor.ts

Pass the props onMathClick and do the computations.

Here's how do we handle math blocks in https://github.com/Tsuzat/Edra/blob/next/src/lib/edra/headless/components/menu/MathInline.svelte
and https://github.com/Tsuzat/Edra/blob/next/src/lib/edra/headless/components/menu/MathBlock.svelte