Reentrancy protection with optional parameter

[ShubhSensei]

#1

Reentrancy Protection

• The child class cannot inherit the TransientReentrancyAware contract's modifier automatically.
• Thus made a new modifier in the TransientContext contract itself.
• The bytes32 key in the modifier is used to create separate locks, which do not interfere with each other to ensure atomic access.

[0xfuturistic]

could we add tests for this @ShubhSensei?

[pegahcarter]

ping @ShubhSensei

[0xfuturistic]

@pegahcarter would you like to give it a shot? you can make a new PR extending this one and adding tests