Support weight related opcodes

[xermicus]

The opcodes basefee, gasprice and gaslimits needs some research first: In Substrate we have 2D weights; also our ref time dimension does not translate 1:1 to EVM gas. Note: Frontier and ETH L2 implementation already thought about this.

Once we figured a consistent solution, contract calls should no longer ignore the supplied gas limit.

• basefee: implement the basefee opcode #142 + [pallet-revive] implement the base fee API polkadot-sdk#6964
• gasprice: implement the gas price opcode #141 + [pallet-revive] implement the gas price API polkadot-sdk#6954
• gaslimit: implement the gas limit opcode #139 + [pallet-revive] implement the gas limit API polkadot-sdk#6926
• gas: implement the gas opcode #136 + [pallet-revive] implement the ref_time_left API polkadot-sdk#6908

[athei]

Also the GASopcode needs to be changed to call into the pallet (currently it uses a hard coded value). Change the weight_left syscall to reftime_left for that. It should just return ref time in the output register.