Add vera rules to check consecutive and trailing empty lines (#3540)

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu

jerry-main/benchmarking.c

@@ -50,7 +50,6 @@ int gettimeofday (struct timeval *tv,
 } /* gettimeofday */
 #endif /* __GNUC__ */
 
-
 int rand (void);
 
 /**

jerry-main/libfuzzer.c

@@ -17,7 +17,6 @@
 
 #include "jerryscript.h"
 
-
 int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)
 {
   srand (0);

jerry-main/main-unix.c

@@ -274,7 +274,6 @@ register_js_function (const char *name_p, /**< name of the function */
   jerry_release_value (result_val);
 } /* register_js_function */
 
-
 /**
  * Runs the source code received by jerry_debugger_wait_for_client_source.
  *
@@ -304,7 +303,6 @@ wait_for_source_callback (const jerry_char_t *resource_name_p, /**< resource nam
   return ret_val;
 } /* wait_for_source_callback */
 
-
 /**
  * Command line option IDs
  */