[#154] Handle all unmatched cases in typeCheckInstr

Description

Problem: Currently typeCheckInstr in Michelson.TypeCheck.Instr contains a lot of pattern match clauses that match all valid instructions, and then one catch-all case that just reports generic error about failed instructions.

This should be replaced with pattern match on all possible instructions, to give more fine-grained error messages. For example, UPDATE should report what type it expects and what were given.

Solution: Handle all unmatched cases in typeCheckInstr and make it reports understandable and specific errors for all syntactically possible, but incorrect instructions.

Related issue(s)

Resolves #154 (closed)

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