Add support for BININT and LONG1 opcodes

[suhacker1]

This PR fixes #11 and #12.

Prior to this PR, the following code snippet raises NotImplementedError: TODO: Add support for Opcode BININT.

import pickle 
import pickletools
from fickling.pickle import Pickled
F = -3
yes = pickletools.dis(pickle.dumps(F))
fickled_payload = Pickled.load(pickle.dumps(F))
safety = fickled_payload.is_likely_safe
print(safety)

This other code snippet similarly raises NotImplementedError: TODO: Add support for Opcode LONG1.

import pickle 
import pickletools
from fickling.pickle import Pickled
F = 2**123 
yes = pickletools.dis(pickle.dumps(F))
fickled_payload = Pickled.load(pickle.dumps(F))
safety = fickled_payload.is_likely_safe
print(safety)

With this PR, these are the new outputs.

0: \x80 PROTO      3
    2: J    BININT     -3
    7: .    STOP
highest protocol among opcodes = 2
True

0: \x80 PROTO      3
    2: \x8a LONG1      10633823966279326983230456482242756608
   20: .    STOP
highest protocol among opcodes = 2
True