mortar firing created

No new scripts or prefabs were created, but a few scripts were modified.
They are listed below with a brief description of the modification

- ClientPlayerController
bool shoot was changed to getbuttonup to check when left click was
released
bool lclick was added to check when left click was held down
new if statement for lclick was created to send rpc to server
shooting2 was also created for local purposes

- serverPlayerController
variables, bool lclick, int charge, float chargeRate, float mortartimer,
were added
rpc setClientShootingState2 was added to receive rpc from client
shootingControls was modified to increase speed of instantiated bullet
Update method was added to control motar charging and reset functions
based off rpc calls of wether left click was held down or released