feat: add bitwise builtins

[KeneePatel]

added bitwise builtins

Time spent on this PR: 30 mins

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

No builtin functions for bitwise operations.

Resolves #20

What is the new behavior?

Added four functions:

• BITWISE_AND
• BITWISE_XOR
• BITWISE_OR
• BITWISE_OPERATIONS

All functions take two inputs of a bigint and outputs a bigint as well.

The first three functions do what they are expected to, and the last function returns output of all three other functions wrapped in an array.

[ClementWalter]

I've updated the repo to organizz things a bit better.

Can you

• put the logic in Code.gs and be aware of the fact that user facing functions (capitalize BITWISE_OR for example), will be applied to cells and not bigint (e.g. BITWISE_OR(I3, I4)) so that the input may be a string or a number, but surely not a bigint