add index ls command, add table and color support

pkg/es/color.go

@@ -0,0 +1,40 @@
+/*
+Copyright © 2026 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package es
+
+import "github.com/fatih/color"
+
+var (
+	green  = color.New(color.BgGreen, color.FgHiWhite).SprintFunc()
+	orange = color.BgRGB(255, 128, 0).AddRGB(0, 0, 0).SprintFunc()
+	red    = color.New(color.BgRed, color.FgHiWhite).SprintFunc()
+	bold   = color.New(color.Bold).SprintFunc()
+)
+
+func Colorize(col, what string) string {
+	switch col {
+	case "green":
+		what = green(what)
+	case "orange":
+		what = orange(what)
+	case "red":
+		what = red(what)
+	}
+
+	return what
+}