Working on moving RGB routines from Notification to RGB service

applications/services/rgb_backlight/rgb_backlight.h

@@ -0,0 +1,44 @@
+/*
+    RGB BackLight Service based on 
+    RGB backlight FlipperZero driver
+    Copyright (C) 2022-2023 Victor Nikitchuk (https://github.com/quen0n)
+
+    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 <https://www.gnu.org/licenses/>.
+*/
+
+#include <furi.h>
+#include "rgb_backlight_settings.h"
+#include "SK6805.h"
+
+typedef struct {
+    char* name;
+    uint8_t red;
+    uint8_t green;
+    uint8_t blue;
+} RGBBacklightStaticColor;
+
+typedef struct {
+    FuriTimer* rainbow_timer;
+
+    int16_t rainbow_red;
+    int16_t rainbow_green;
+    int16_t rainbow_blue;
+    uint8_t rainbow_stage;
+
+    RGBBacklightSettings* settings;
+
+} RGBBacklightApp;
+
+#define RECORD_RGB_BACKLIGHT "rgb_backlight"
+