move examples to folder, separate page

wiki/fw/Application-examples.md

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+One of the most important component of Flipper Core is [FURI](FURI) (Flipper Universal Registry Implementation). It helps control the applications flow, make dynamic linking and interaction between applications.
+
+In fact, FURI is just wrapper around RTOS thread management and mutexes, and callback management.
+
+In this article we create few application, interact between apps, use OS functions and interact with HAL.
+
+# Simple Blink app
+
+First, let's create a simple led blinking application.
+
+## General agreements
+
+Flipper application is just a function:
+
+```C
+void application_name(void* p) {
+    // Setup
+
+    while(1) {
+        // Loop
+    }
+}
+```
+
+1. `void* p` is arbitrary pointer that may be used for pass parameters to application at launch (like argc/argv in POSIX).
+2. Application must never attempt to return or exit from their implementing function.
+3. Avoid long cycles without any "waits" or "blocking" like `delay` or `xQueueReceive`, otherwise your app will blocking overall Flipper work.
+4. Do not create static variables inside function or global variables. Use only local variables. We plan to add virual in-RAM filesystem to save any persistent data.  
+
+# Application examples
+
+**[Blink](Blink-app)**