rename: 3x-ui/x-ui -> L-UI/l-ui/lui-agent (paths, services, env, assets)

Display L-UI; panel binary/process l-ui, agent lui-agent.
Dirs /usr/local/l-ui, /etc/l-ui, /var/log/l-ui; DB /etc/l-ui/l-ui.db
(name file drives it via GetName), probe.db beside it, cert
/etc/l-ui/cert, bin /usr/local/l-ui/bin. Services l-ui.service /
lui-agent.service, OpenRC lui-agent, l-ui.sh, cmd/lui-agent.
Env prefix XUI_ -> LUI_ (code reads new prefix only). Release
assets l-ui-linux-* / lui-agent-linux-*; Gitea repo rogue/l-ui is
a placeholder pending user confirmation (see selfupdate.go note).
Go module path github.com/mhsanaei/3x-ui/v3 intentionally kept.
Versions unchanged: panel V2.6.0 / agent A2.5.0.

openrc/lui-agent

@@ -0,0 +1,18 @@
+#!/bin/sh /etc/rc.common
+# L-UI node agent procd init script (OpenWrt)
+# Install: cp lui-agent /etc/init.d/lui-agent && chmod +x /etc/init.d/lui-agent
+#          /etc/init.d/lui-agent enable && /etc/init.d/lui-agent start
+
+USE_PROCD=1
+START=99
+STOP=10
+
+start_service() {
+    procd_open_instance lui-agent
+    procd_set_param command /usr/local/l-ui/lui-agent agent --config /etc/l-ui/agent.json
+    procd_set_param env LUI_BIN_FOLDER=/usr/local/l-ui/bin
+    procd_set_param respawn 3600 5 5
+    procd_set_param stdout 1
+    procd_set_param stderr 1
+    procd_close_instance
+}

openrc/x-ui-agent

@@ -1,18 +0,0 @@
-#!/bin/sh /etc/rc.common
-# 3x-ui node agent procd init script (OpenWrt)
-# Install: cp x-ui-agent /etc/init.d/x-ui-agent && chmod +x /etc/init.d/x-ui-agent
-#          /etc/init.d/x-ui-agent enable && /etc/init.d/x-ui-agent start
-
-USE_PROCD=1
-START=99
-STOP=10
-
-start_service() {
-    procd_open_instance x-ui-agent
-    procd_set_param command /usr/local/x-ui/xui-agent agent --config /etc/x-ui/agent.json
-    procd_set_param env XUI_BIN_FOLDER=/usr/local/x-ui/bin
-    procd_set_param respawn 3600 5 5
-    procd_set_param stdout 1
-    procd_set_param stderr 1
-    procd_close_instance
-}