Add summary table to the unicodedata doc

[StanFromIreland]

This was suggested by @merwok some time ago (I can't remember where). The patch adds a little summary table like the one in the math module docs. I however, excluded the constants, as most people don't care about them anyway.

[read-the-docs-community]

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📚 cpython-previews | 🛠️ Build #32727141 | 📁 Comparing 889fb5f against main (acefff9)

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± library/unicodedata.html

[clin1234]

lgtm

[serhiy-storchaka]

I am not a great fun of such tables. They take up the entire screen, and you have to scroll through them before getting to the documentation for specific functions. Can we add the list of names to the left panel?

[malemburg]

LGTM

[StanFromIreland]

Can we add the list of names to the left panel?

I don't think that solves the original problem, they do not provide any summary/overview of what all the functions do. Additionally, I agree it would be good, however it is and isn't possible. It would have to be enabled doc-wide, which we have done before (91ddde4), but have had to revert (c9d2bc6) because it was too disruptive.

[serhiy-storchaka]

Well, I do not actively oppose this. This module is pretty small. But in some cases it seems excessive.

[StanFromIreland]

If it were graphlib, I'd agree ;-) In this case I think it is useful, it is a slightly messy jumble of various functions. How opposed are you in this specific case?