The new make target build-local will build all non-Python packages that make build builds.

make build-venv will build all Python packages that make build builds.

Preparation for #30896, #30371 and related to #30913.

Depends on #30912

CC: @tobiasdiez @jhpalmieri @dimpase

Component: build

Author: Matthias Koeppe

Branch/Commit: 61f6ba6

Reviewer: John Palmieri

Issue created by migration from https://trac.sagemath.org/ticket/31362