Add dynamically loading table credentials support for unity delta write #61

Job	Run time
code-quality	1m 37s
build packages	13s
Buena Vista functional test / python 3.9	9m 50s
Check if MotherDuck v0.10.x token exists	1s
fsspec test / python 3.9	59s
functional test / python 3.8	2m 53s
file-based functional test / python 3.8	3m 11s
functional test / python 3.9	2m 58s
plugins test / python 3.9	1m 6s
functional test / python 3.10	2m 47s
file-based functional test / python 3.9	2m 59s
unit test / python 3.8	1m 4s
functional test / python 3.11	2m 22s
file-based functional test / python 3.10	3m 12s
unit test / python 3.9	59s
Unity Catalog functional test / python 3.9	3m 7s
file-based functional test / python 3.11	2m 48s
unit test / python 3.10	1m 2s
unit test / python 3.11	1m 9s
MotherDuck functional test / python ${{ matrix.python-version }}	0s
verify packages / python 3.8 / ubuntu-latest	29s
verify packages / python 3.9 / ubuntu-latest	38s
verify packages / python 3.10 / ubuntu-latest	29s
verify packages / python 3.11 / ubuntu-latest	38s
verify packages / python 3.8 / macos-latest	54s
verify packages / python 3.9 / macos-latest	26s
verify packages / python 3.10 / macos-latest	32s
verify packages / python 3.11 / macos-latest	29s
verify packages / python 3.8 / windows-latest	1m 19s
verify packages / python 3.9 / windows-latest	1m 54s
verify packages / python 3.10 / windows-latest	1m 30s
verify packages / python 3.11 / windows-latest	1m 33s
	55m 8s

Provide feedback