Refactor charmcraft.yaml files to use `python` plugin and `st124` notation #1019

Job	Run time
Run Tests / Bundle Integration	28m 16s
Publish Charm / Generate the Charm Matrix	3s
Run Tests / Individual charm's integration tests (controller)	26m 45s
Run Tests / Individual charm's integration tests (ui)	25m 7s
Run Tests / Lint Code (controller)	19s
Run Tests / Unit Test (controller)	32s
Run Tests / Lint Code (ui)	20s
Run Tests / Unit Test (ui)	39s
Run Tests / Check libraries (jupyter-controller) / Check libraries	35s
Run Tests / Check libraries (jupyter-controller) / Lint	11s
Run Tests / Check libraries (jupyter-ui) / Check libraries	28s
Run Tests / Check libraries (jupyter-ui) / Lint	10s
Run Tests / Terraform (controller) / Apply / Apply Terraform	5m 20s
Run Tests / Terraform (controller) / Lint / Lint Terraform	7s
Run Tests / Terraform (controller) / Check / Check Terraform	5s
Run Tests / Terraform (ui) / Apply / Apply Terraform	5m 56s
Run Tests / Terraform (ui) / Lint / Lint Terraform	8s
Run Tests / Terraform (ui) / Check / Check Terraform	10s
Publish Charm / Publish Charm (./charms/jupyter-controller)	35s
Publish Charm / Publish Charm (./charms/jupyter-ui)	53s
	1h 36m 39s

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