Add script to start server and create flame graph with performance profiling

prak3/startServerAndCreateFlameGraph.sh

+#!/bin/bash
+FREQUENCY=$1
+FREQUENCY=${1:-99}
+
+perf record -g -F$FREQUENCY ./build/src/myserver
+perf script | /usr/local/FlameGraph/stackcollapse-perf.pl | /usr/local/FlameGraph/flamegraph.pl > serverFlameGraph.svg
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