Add (file) IO checks #291

Job	Run time
R Package Checks / docs-check / docs-check	1m 26s
R Package Checks / deps-main-check / deps-main	1m 5s
R Package Checks / codecov / test-coverage (ubuntu-latest)	1m 57s
R Package Checks / check-R-updates / updated-files	6s
R Package Checks / codecov / test-coverage (windows-latest)	3m 14s
R Package Checks / codecov / test-coverage (macOS-latest)	1m 41s
R Package Checks / lintr / lint	1m 42s
R Package Checks / r-cmd-check / macOS-latest (release)	1m 36s
R Package Checks / revdeps-check / revdep RMI-PACTA/workflow.pacta	2m 46s
R Package Checks / r-cmd-check / windows-latest (release)	2m 56s
R Package Checks / revdeps-check / revdep RMI-PACTA/workflow.pacta.report	2m 50s
R Package Checks / r-cmd-check / windows-latest (4.1)	4m 14s
R Package Checks / revdeps-check / revdep RMI-PACTA/workflow.pacta.webapp	2m 44s
R Package Checks / r-cmd-check / ubuntu-latest (release)	2m 23s
R Package Checks / r-cmd-check / ubuntu-latest (devel)	3m 7s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-1)	2m 0s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-2)	2m 10s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-3)	2m 8s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-4)	2m 10s
R Package Checks / version-check / version-check	41s
	42m 56s

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