Deploy more Beman libraries for C++Now visibility

[neatudarius]

Deploy more Beman libraries for C++Now visibility. Check #109 / #70 .

Note: My proposal is to have everything deployed which enables a quick playground for our users without the need to clone the repo.

Deployed libraries:

• beman.exemplar
• beman.optional
• beman.iterator_interface
• beman.any_view
• beman.inplace_vector
• beman.net
• beman.execution
• beman.task

[neatudarius]

Can we speedup this task? (for C++Now availability) CC: @RaduNichita

L.E. I think we should add at least all libraries which will be available on the website after bemanproject/website#31.

[neatudarius]

beman.utf_view - is deferred to bemanproject/utf_view#42, as it has an external dep which is not on Compiler Explorer yet.