Let's document! vcpkg & conan edition

vcpkg and conan are popular C++ package managers. I've used both myself. I've written pages for each of them, but in reality they probably need a page for each sub command since there are many.

vcpkg:

• vcpkg https://github.com/tldr-pages/tldr/pull/12295
  • contact
  • create#23782
  • depend-info
  • edit
  • env
  • export
  • hash
  • help
  • help
  • install #23782
  • integrate
  • list #23782
  • owns
  • remove
  • remove #23782
  • search #23782
  • update
  • upgrade
  • version
  • x-history (this is alpha, hence x-)

conan:

• conan https://github.com/tldr-pages/tldr/pull/5008
  • alias
  • build #23781
  • config
  • copy
  • create #23781
  • download
  • editable
  • export-pkg
  • export
  • get
  • help
  • imports
  • info
  • inspect
  • install #23781
  • lock
  • new
  • package
  • profile #23781
  • remote #23781
  • remove
  • search
  • source
  • test
  • upload
  • user
  • workspace