raco: add page (#6955)

pages/common/raco.md

@@ -0,0 +1,28 @@
+# raco
+
+> Racket command-line tools.
+> More information: <https://docs.racket-lang.org/raco/>.
+
+- Install a package, automatically installing dependencies:
+
+`raco pkg install --auto {{package_source}}`
+
+- Install the current directory as a package:
+
+`raco pkg install`
+
+- Build (or rebuild) bytecode, documentation, executables, and metadata indexes for collections:
+
+`raco setup {{collection1 collection2 ...}}`
+
+- Run tests in files:
+
+`raco test {{path/to/tests1.rkt path/to/tests2.rkt ...}}`
+
+- Search local documentation:
+
+`raco docs {{search_terms ...}}`
+
+- Display help:
+
+`raco help`