Get started example update for addressable LED compatibility.

Added the RMT/addr LED blink to the example and more detailed README.md
 Moved component/led_strip to common_components
 Added missing README file to common_components/led_strip
 README file update
 Makefile and Kconfig fixed for led_strip component
 Fixing end-of-line on main/blink.c
 Component updated to handle multiple instances
 Added note on the RMT channel number (ESP32 and ESP32-S2)
 Removed components folder from rmt/led_strip example and README updated
 Changed the led_strip_denit function and added ESP32-C3 RMT info on channel configuration
 Updates on README, Kconfig default settings and configure_led() function added

examples/common_components/led_strip/README.md

@@ -0,0 +1,16 @@
+# LED Strip Component
+
+This directory contains an implementation for addressable LEDs using the RMT peripheral.
+
+It's compatible with:
+
+* [WS2812](http://www.world-semi.com/Certifications/WS2812B.html)
+* SK68XX
+
+This component is used as part of the following ESP-IDF examples:
+- [Blink Example](../../get-started/blink).
+- [LED Strip Example](../../peripherals/rmt/led_strip).
+
+To learn more about how to use this component, please check API Documentation from header file [led_strip.h](./include/led_strip.h).
+
+Please note that this component is not considered to be a part of ESP-IDF stable API. It may change and it may be removed in the future releases.