Port stdlib.fc and mathlib.fc's asm functions to Tact's stdlib

[anton-trunov]

This is going to be very easy after #768 is resolved.

It is partially addressed in these issues:

• Add missing wrappers for FunC's store_something() functions from the stdlib.fc #496
• Support natively FunC's parse_std_addr and related functions #618

[Gusarich]

We can't just port them to Tact stdlib and remove the .fc files, because functions defined there are used in code generation, e.g. src/generator/writers/writeStdlib.ts.

[anton-trunov]

That's right. I meant some additional functions that can be used by Tact users.