MEV Router

[joaobrunoah]

Description

Creating MEV Router, according to issue #1189.

Notice that I needed to remove the swaps from the Router.sol file, and add it to RouterSwap.sol. That's because Router and MevRouter needs to implement the single-hop swap and I didn't find a better way to reuse the code.

Type of change

• Bug fix
• New feature
• Breaking change
• Dependency changes
• Code refactor / cleanup
• Optimization: [ ] gas / [ ] bytecode
• Documentation or wording changes
• Other

Checklist:

• The diff is legible and has no extraneous changes
• Complex code has been commented, including external interfaces
• Tests have 100% code coverage
• The base branch is either main, or there's a description of how to merge

Issue Resolution

Closes #1189