Add new Jupyter kernel supervisor #924

Job	Run time
Check Python types	2m 45s
Lint	2m 5s
Test Positron IPyKernel (ubuntu-latest, 3.8)	2m 36s
Test Minimum Positron IPyKernel Dependencies (ubuntu-latest, 3.8)	3m 59s
Test Positron IPyKernel (macos-13, 3.9)	4m 35s
Test Positron IPyKernel (windows-latest, 3.10)	5m 51s
Python Tests (ubuntu-latest, 3.8)	1m 31s
Python Tests (ubuntu-latest, 3.12)	1m 33s
Test Positron IPyKernel (ubuntu-latest, 3.11)	2m 26s
Test TypeScript (ubuntu-latest, 3.x, ts-unit)	3m 12s
Test Positron IPyKernel (ubuntu-latest, 3.12)	1m 32s
Test TypeScript (ubuntu-latest, 3.x, functional)	2m 6s
Test TypeScript (macos-12, 3.x, ts-unit)	4m 35s
Test TypeScript (macos-12, 3.x, venv)	5m 9s
Test TypeScript (macos-12, 3.x, single-workspace)	6m 2s
Test TypeScript (macos-12, 3.x, debugger)	5m 28s
Test TypeScript (macos-12, 3.x, functional)	3m 49s
Test TypeScript (macos-12, 3.x, smoke)	6m 13s
Test TypeScript (windows-latest, 3.x, ts-unit)	17m 51s
Test TypeScript (windows-latest, 3.x, functional)	9m 14s
	1h 32m 32s

Provide feedback