add error for missing commandLineParams (#13719)

* add error for missing commandLineParams

* fixup

* rewrite

lib/pure/os.nim

@@ -2770,6 +2770,10 @@ when declared(paramCount) or defined(nimdoc):
     result = @[]
     for i in 1..paramCount():
       result.add(paramStr(i))
+else:
+  proc commandLineParams*(): seq[TaintedString] {.error:
+  "commandLineParams() unsupported by dynamic libraries".} =
+    discard
 
 when not weirdTarget and (defined(freebsd) or defined(dragonfly)):
   proc sysctl(name: ptr cint, namelen: cuint, oldp: pointer, oldplen: ptr csize_t,