build: separate compiler and libs

compiler/cl/_testrt/map/in.go

@@ -0,0 +1,10 @@
+package main
+
+import (
+	"github.com/goplus/llgo/c"
+)
+
+func main() {
+	a := map[int]int{23: 100, 7: 29}
+	c.Printf(c.Str("Hello %d\n"), a[23])
+}