remove cli executable, add cli code

cmd/cli/main.go

@@ -1 +1,22 @@
 package main
+
+import (
+	"flag"
+	"fmt"
+
+	"git.32bit.cafe/yequari/rss-gen/rss"
+)
+
+func main() {
+    siteUrl := flag.String("url", "", "url of site")
+    siteTitle := flag.String("title", "", "site title")
+    siteDesc := flag.String("desc", "", "site description")
+
+    flag.Parse()
+    if *siteUrl == "" || *siteTitle == "" || *siteDesc == "" {
+        flag.PrintDefaults()
+    }
+
+    fmt.Println(rss.GenerateRss(*siteUrl, *siteTitle, *siteDesc, flag.Args()...))
+}
+