Add snowflake support to connections pane #2317

Job	Run time
Lint	1m 59s
Check Python types	1m 21s
Python Tests (ubuntu-latest, 3.13)	39s
Python Tests (ubuntu-latest, 3.9)	45s
Test Minimum Positron IPyKernel Dependencies (ubuntu-latest, 3.9)	7m 16s
Test Positron IPyKernel (ubuntu-latest, 3.11)	2m 1s
Test Positron IPyKernel (windows-latest, 3.10)	2m 56s
Test TypeScript (ubuntu-latest, 3.x, functional)	2m 30s
Test TypeScript (ubuntu-latest, 3.x, ts-unit)	3m 39s
Test Positron IPyKernel (ubuntu-latest, 3.12)	2m 1s
Test Positron IPyKernel (macos-latest, 3.9)	2m 35s
Test TypeScript (macos-latest, 3.x, ts-unit)	4m 0s
Test Positron IPyKernel (ubuntu-latest, 3.13)	1m 57s
Test TypeScript (macos-latest, 3.x, debugger)	3m 51s
Test TypeScript (windows-latest, 3.x, ts-unit)	5m 47s
Test TypeScript (macos-latest, 3.x, venv)	5m 37s
Test TypeScript (macos-latest, 3.x, functional)	2m 42s
Test TypeScript (windows-latest, 3.x, functional)	4m 28s
Test TypeScript (macos-latest, 3.x, single-workspace)	4m 34s
	1h 0m 38s

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