Add "No Squid" option #254

Job	Run time
Tests (klayout27)	1m 21s
Tests (non-🐧) (windows-latest, klayout27)	2m 28s
Check copyright headers	7s
Tests (klayout28)	1m 21s
Check license	4s
Tests (latest)	1m 14s
Tests (non-🐧) (windows-latest, klayout28)	2m 45s
Shellcheck	4s
Tests (non-🐧) (windows-latest, latest)	2m 8s
Static code analysis	1m 32s
Tests (non-🐧) (macos-latest, klayout27)	13m 40s
Verify documentation	4m 47s
Tests (non-🐧) (macos-latest, klayout28)	1m 2s
Verify layer properties	48s
Tests (non-🐧) (macos-latest, latest)	1m 6s
Deploy documentation	2m 14s
Publish test results	2m 24s
Build & Publish kqcircuits 🐍 📦	40s
	39m 45s

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