Use withr::with_envvar() to enhance whole project

[psychelzh]

withr::with_envvar() will set environmental variables, which could be accessed by both R and system.

preproc-mri/R/workflows.R

Lines 85 to 88 in c8c480a

	withr::with_environment(
	rlang::as_environment(argv[-1]),
	rlang::exec(paste0("commit_", context), jobs)
	)

[psychelzh]

This would make templates more general purpose, too.