Improve bundle-installation requirements message

[Eric Pettersen]

Installing PhenixUI into ChimeraX 1.5 produces the cryptic and misleading output below. The output needs to say that the user needs a newer version of ChimeraX, not a newer version of the Map bundle. It would also be nice to suppress the pip upgrade message, which I doubt users should be doing on their own.

Looking in indexes: ​https://pypi.org/simple, ​https://cxtoolshed.rbvi.ucsf.edu/pypi/
Processing c:\users\gcaballe\downloads\chimerax_phenixui-1.2.2-py3-none-any.whl
Requirement already satisfied: ChimeraX-MapData~=2.0 in c:\users\gcaballe\documents\chimerax\bin\lib\site-packages (from ChimeraX-PhenixUI==1.2.2) (2.0)
ERROR: Could not find a version that satisfies the requirement ChimeraX-Map~=1.1.3 (from chimerax-phenixui) (from versions: none)
ERROR: No matching distribution found for ChimeraX-Map~=1.1.3

[notice] A new release of pip available: 22.2.2 -> 24.2
[notice] To update, run: C:\Users\gcaballe\Documents\ChimeraX\bin\ChimeraX.exe -m pip install --upgrade pip

[Greg Couch]

Ticket retargeted after milestone closed

[Greg Couch]

Won't make 1.10.