regression test for nim-lang/nimsuggest#58 (#16817)

Already works this is simply to catch any regressions.

nimsuggest/tests/tuse.nim

@@ -0,0 +1,22 @@
+# basic tests for use
+
+# bug #58
+proc someOtherProc() =
+  discard
+
+someOtherProc()
+
+proc #[!]#someProc*() =
+  discard
+
+#[!]#someProc()
+
+discard """
+$nimsuggest --tester $file
+>use $1
+def;;skProc;;tuse.someProc;;proc (){.noSideEffect, gcsafe, locks: 0.};;$file;;9;;5;;"";;100
+use;;skProc;;tuse.someProc;;proc (){.noSideEffect, gcsafe, locks: 0.};;$file;;12;;0;;"";;100
+>use $2
+def;;skProc;;tuse.someProc;;proc (){.noSideEffect, gcsafe, locks: 0.};;$file;;9;;5;;"";;100
+use;;skProc;;tuse.someProc;;proc (){.noSideEffect, gcsafe, locks: 0.};;$file;;12;;0;;"";;100
+"""