feat(r-dependent-packages): new `skip` option to skip R package installation #361

Job	Run time
test-global	26s
test-all-scenarios	0s
detect-changes	3s
test-all	0s
test-detectes-scenarios (r-dependent-packages)	3s
test-detects (r-dependent-packages, debian:stable-slim)	2s
test-detects (r-dependent-packages, ubuntu:focal)	2s
test-detects (r-dependent-packages, ubuntu:jammy)	4s
test-detects (r-dependent-packages, mcr.microsoft.com/devcontainers/base:ubuntu)	2s
test-detects (r-dependent-packages, mcr.microsoft.com/devcontainers/base:debian)	4s
	46s

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