Well the idea is certainly nice. There are many levels on which code can be shared.
1 - re-usable snippets, such as validating email
2 - basic sample projects, such as simple demonstrating the usage of a component
3 - entire libraries/code collection (such as a unit containing all kind of functions to deal with emails)
4 - actual applications for use
5 - Probably more.
4: Can either be in the CCR (search wiki) or hosted on sourceforge and others
3: May also find its place in the CCR
2: Some of them are in the examples folder of the Lazarus distribution. Some more might be added there. But that will take time and reviews, and not all will make it.
For 1 and the remainder of 2 (and maybe 5) there is no official place yet.
I would not be sure if any one of the current team has the time and interest to set this up *AND* maintain it.
On the other hand, this does not necessarily have to be provided by the official team. There are successful none English lazarus forums provided by others (and within their language, they are accepted as the official place). And for Delphi the best add-on providers were provided by other people.
So I suggest that this is a good project for anyone with time and energy to take it on.
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Just to say: This is more than just adding a new board to the forum. It needs maintenance. Reviews copyright violations and all.
Also a forum would not provide a good structure to organize and search the data