Faster search with RWMutex

[alipourhabibi]

Overview:
This PR is going to increase the performance of searching with introducing another route.
This new routes will use RWMutex with RLock/Unlock for reading.

TODO:

• Add other routes
• Add benchmark tests for rwmutex routes
• Run benchmark tests concurrently
• Modify grafana dashboard
• Add hurl tests

Grafana panel now:

[Iajrdev]

A suggestion, We can modify this part with:

s.mutex.RLock()
index, found := s.list.Find(value)
s.mutex.RUnlock()

because this approach could be beneficial as it locks the data only during the find operation
allowing multiple read operations to happen concurrently It ensures thread safety while minimizing the time the lock is held which can improve performance in read heavy scenarios

The problem is that it introduces the potential for errors or bugs if the code between the lock and unlock calls becomes more complex in the future

What do you think? @armineyvazi @alipourhabibi

[Iajrdev]

I've reviewed the code and have a suggestion that we might consider discussing further.

[Iajrdev]

Everything looks good.