set up renv in this project

Author: egnor

.Rbuildignore

@@ -1,3 +1,5 @@
+^renv$
+^renv\.lock$
 ^codecov\.yml$
 ^LICENSE\.md$
 ^.*\.Rproj$

.Rprofile

@@ -0,0 +1,16 @@
+message("🌱 sentryR/.Rprofile: activating `renv`")
+source("renv/activate.R")
+message()
+
+.home_rprofile <- path.expand("~/.Rprofile")
+if (file.exists(.home_rprofile)) {
+  message("🏠 sentryR/.Rprofile: loading ", .home_rprofile)
+  source(.home_rprofile)
+  message()
+}
+
+message("▶️ sentryR/.Rprofile: all set")
+message("- use `devtools::load_all()` to load library")
+message("- use `devtools::test()` to run tests")
+
+invisible()