example: add script to execute all

This patch will save your time to check example.

  ./all.sh [interval time between examples, default is 1 second]

src/examples/all.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+RED='\033[31m'
+GREEN='\033[32m'
+NC='\033[0m'
+
+INTERVAL=${1:-1}
+EXAMPLES=`find . -executable -type f | sort | uniq`
+for EXAMPLE in $EXAMPLES
+do
+	if [[ $EXAMPLE == *.sh ]]; then
+		continue
+	fi
+
+	echo -e "Execute: "${GREEN}$EXAMPLE${NC}" for "$INTERVAL" second(s)"
+	$EXAMPLE &
+	EXAMPLE_PID=$!
+	sleep $INTERVAL 
+	kill -s SIGTERM $EXAMPLE_PID
+	if [ $? -ne 0 ]; then
+    		echo -e "Something wrong with: "${RED}$EXAMPLE${NC}
+	fi
+done

src/examples/meson.build

@@ -67,3 +67,7 @@ if get_option('bindings').contains('capi') == true
             dependencies : examples_dep)
     endforeach
 endif
+
+execute_all_src = join_paths(meson.source_root(), 'src/examples/all.sh')
+execute_all_dest = join_paths(meson.build_root(), 'src/examples/all.sh')
+run_command('cp', execute_all_src, execute_all_dest)