Feat: add Skyward Finance attack

[nine-december]

On Nov 2, 2021 an attacker stole 1.1MM in NEAR tokens from Skyward Finance.

Attack Overview
Total Lost: 3.2MM USD (1.1MM NEAR)

// Key Info Sources
Writeup: https://rekt.news/skyward-rekt/

Principle: Business Logic - Multiple deposits on single withdraws

[nine-december]

Non EVM.