BLD Add DISTDIR variable. ### Description

Adds `DISTDIR` env variable that points to the directory where libraries should be copied to when building shared libraries with recipe.

### Checklists

- [x] Add new / update outdated documentation

package:
  name: lazy-object-proxy
  version: 1.8.0
  top-level:
    - lazy_object_proxy
source:
  url: https://files.pythonhosted.org/packages/74/37/591f89e8a09ae4574391bdf8a5eecd34a3dbe545917333e625c9de9a66b0/lazy-object-proxy-1.8.0.tar.gz
  sha256: c219a00245af0f6fa4e95901ed28044544f50152840c5b6a3e7b2568db34d156
about:
  home: https://github.com/ionelmc/python-lazy-object-proxy
  PyPI: https://pypi.org/project/lazy-object-proxy
  summary: A fast and thorough lazy object proxy.
  license: BSD-2-Clause

package:
  name: lazy-object-proxy
  version: 1.8.0
  top-level:
    - lazy_object_proxy
source:
  url: https://files.pythonhosted.org/packages/74/37/591f89e8a09ae4574391bdf8a5eecd34a3dbe545917333e625c9de9a66b0/lazy-object-proxy-1.8.0.tar.gz
  sha256: c219a00245af0f6fa4e95901ed28044544f50152840c5b6a3e7b2568db34d156
about:
  home: https://github.com/ionelmc/python-lazy-object-proxy
  PyPI: https://pypi.org/project/lazy-object-proxy
  summary: A fast and thorough lazy object proxy.
  license: BSD-2-Clause
