[FL-1906] Documentation: add Doxyfile, prepare sources for doxygen. (#741)

* Documentation: add Doxyfile, prepare sources for doxygen.

* Update ReadMe and remove obsolete CLA

* Add contribution guide

* Contributing: update text

* Correct spelling

core/furi/record.h

@@ -1,3 +1,8 @@
+/**
+ * @file record.h
+ * Furi: record API
+ */
+
 #pragma once
 
 #include <stdbool.h>
@@ -6,36 +11,45 @@
 extern "C" {
 #endif
 
-/** Initialize record storage
- * For internal use only.
+/** Initialize record storage For internal use only.
  */
 void furi_record_init();
 
 /** Create record
- * @param name - record name
- * @param data - data pointer
- * @note Thread safe. Create and destroy must be executed from the same thread.
+ *
+ * @param      name  record name
+ * @param      data  data pointer
+ * @note       Thread safe. Create and destroy must be executed from the same
+ *             thread.
  */
 void furi_record_create(const char* name, void* data);
 
 /** Destroy record
- * @param name - record name
- * @return true if successful, false if still have holders or thread is not owner.
- * @note Thread safe. Create and destroy must be executed from the same thread.
+ *
+ * @param      name  record name
+ *
+ * @return     true if successful, false if still have holders or thread is not
+ *             owner.
+ * @note       Thread safe. Create and destroy must be executed from the same
+ *             thread.
  */
 bool furi_record_destroy(const char* name);
 
 /** Open record
- * @param name - record name
- * @return pointer to the record
- * @note Thread safe. Open and close must be executed from the same thread.
- * Suspends caller thread till record appear
+ *
+ * @param      name  record name
+ *
+ * @return     pointer to the record
+ * @note       Thread safe. Open and close must be executed from the same
+ *             thread. Suspends caller thread till record appear
  */
 void* furi_record_open(const char* name);
 
 /** Close record
- * @param name - record name
- * @note Thread safe. Open and close must be executed from the same thread.
+ *
+ * @param      name  record name
+ * @note       Thread safe. Open and close must be executed from the same
+ *             thread.
  */
 void furi_record_close(const char* name);