SimpleCounter

This is a simple calculation app that contain function like:

1. fundMe:
   this is payable function for injecting ETH.

2. increaseByOne:
   everyone can see this function and they can call it for increasing the count.

3. decreaseByOne:
   everyone can see this function and they can call it for decreasing the count.

4. increase:
   this function can be called to increasing the count by elevator amount.

5. decrease:
   this function can be called to decreasing the count by reducer amount.

6. multiply:
   this function can be called for multiplying the count by modulus amount.

7. divide:
   this function can be called for dividing the count by div amount.

if our current count is 0,
we can decrease it because the result will be negative