refactor: add `rcopy()` function

ebil.sh

···
 	[[ -d "$1" ]] || die 'path does not exist'
 }
 
+rcopy() {
+	local src="$1"
+	local dst="$2"
+	shift
+	shift
+
+	rsync -rltzq --progress "$@" "$src/" "$dst"
+}
+
 push() {
 	local site="$1"
 	local path="$2"
···
 	[[ -f "${path}/index.html" ]] || warn 'index.html not found' "(${path}/index.html)"
 
 	msg 'pushing to' "$site" 'from' "$path"
-	rsync -rltzq --progress --delete --chmod=D755,F644 "${path}/" "${host}:/var/ebil.club/${name}/${site}"
+	rcopy "${path}" "${host}:/var/ebil.club/${name}/${site}" --delete --chmod=D755,F644
 }
 
 pull() {
···
 	name="${site%.ebil.club}"
 
 	msg 'pulling from' "$site" 'to' "$path"
-	rsync -rltzq --progress "${host}:/var/ebil.club/${name}/${site}/" "${path}"
+	rcopy "${host}:/var/ebil.club/${name}/${site}" "${path}"
 }
 
 main() {