Improve `GT.save()` usability #2148

Job	Run time
Test for saving table image with browser	2m 52s
test-pandas	45s
build (3.9)	1m 8s
build (3.10)	1m 3s
build (3.11)	1m 4s
build (3.12)	1m 10s
build (3.13)	1m 22s
test-windows	4m 50s
Release to pypi	0s
	14m 14s

Provide feedback