Redirect snapshot and http outcall

[chenyan-dfinity]

• Inspec wasm for deployCanister unless opt-out
• Limit heap memory to 1G
• Redirect snapshot and http outcall to backend
• http outcall limits to 0.25T per call, and 0.55T maximal cycles
• transform doesn't work at the moment, because replica enforces you can only call transform functions in your own canister.
• Add init arg wasm_utils_principal
• Add transferOwnership function
• Add installExternalCanister function