Move i3-specific utils to live along i3 config

dotfiles/config/bmo/menu.ini

@@ -54,5 +54,5 @@
     consumer = pwatcher -
 
 [menu.def.windows]
-    generator = i3-lswin
-    consumer = i3-focuswin
+    generator = ~/.i3/bin/i3-lswin
+    consumer = ~/.i3/bin/i3-focuswin

dotfiles/i3/bin/i3-focuswin

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+sed -ne 's/.* \([0-9]*\)/[id=\1] focus/p' \
+  | (read -r cmd; i3-msg "$cmd")

dotfiles/i3/bin/i3-lswin

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+lswindows() {
+    echo -ne "i3-ipc\x0\x0\x0\x0\x4\x0\x0\x0" \
+      | socat STDIO "UNIX-CLIENT:$(i3 --get-socketpath)" \
+      | tail -c +15 \
+      | sed -e 's/"id":/\n"id":/g' \
+      | sed -ne 's/.*"name":"\([^"]\+\)".*"window":\([0-9]\+\).*/\1 \2/p' \
+      | grep .
+}
+
+lswindows