Feature/added qasm3 grammar#19

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sah4ez wants to merge 4 commits intomasterfrom

feature/added-qasm3-grammar

Commits on Jan 1, 2021

added ANTLR grammar
sah4ez
committed

Commits on Jan 2, 2021

wip example of teleport and parser of qams3
sah4ez
committed

Commits on Jan 3, 2021

implement call gate
sah4ez
committed

Commits on Jan 5, 2021

added cnot for milti-qubit
sah4ez
committed