Install src/bin/* scripts via setup.py (scripts, console_scripts)

[mkoeppe]

Currently the scripts in src/bin are installed by build/make/Makefile.

As part of #21507, for those scripts that should be considered part of sagelib, the installation should be done by src/setup.py instead, using the ​scripts and console-scripts features.

(Example, ​received from was: ​​https://github.com/sagemathinc/smc/tree/master/src/smc_pyutil. See, in particular, the console_scripts section of setup.py: ​​https://github.com/sagemathinc/smc/blob/master/src/smc_pyutil/setup.py#L58)

(Those scripts that don't belong into src/bin are moved to build/bin by #21559. See also: #21570: Move non-scripts of src/bin/ elsewhere (and also move their install location; #21707: Split sage-env into sage-build-env and sage-env)

[embray]

+1

[mkoeppe]

Erik, Jeroen - should this be done on top of #21604 and #21600; or does it have to wait for other tickets?

[embray]

Normally this shouldn't be dependent on those tickets, and I can't think of any reason it would be. But I've come not to expect normalcy with sage.

[mkoeppe]

In #22731 comment 28, it is proposed to move scripts to $SAGE_LOCAL/libexec. Could a setuptools expert comment whether setup.sh would be able to do this, or can it only install into bin (via the scripts and console_scripts features)?