Grammar needs to support calltype and callopts

[dmfxyz]

The grammer currently only lets you do stuff like
int x = shitcoin.balanceOf(address 0xbeef)
which likely implies an implicit view and not a signed called or a delegated call. Whatever it implies, the other two types are missing.

The grammar should be extended to support what's described in the readme
int x = shitcoin.BalanceOf.view{gas: 10000}(address 0xbeef)

imo the calltype should be optional and default to one of view or call.