Support and Tests for Rebalancer Manager

[pedrovalido]

Implemented more tests and some malicious use cases for Rebalancer Manager. Not sure how to test some of errors of Rebalancer Manager but am working on them. Btw, let me know what you think of what has been implemented. Keep in mind the commit has some spam because it is a WIP and will be clean when is ready for review.

@DaigaroCota @brozorec

[0xdcota]

Hey @pedrovalido , everything looks good to me so far. Only noticed one test was not working. I left a comment for that.

I also saw intention to test the remaining of the errors, it will be great if those can be tested too.

Also just wanted to point out good job on making the applicable tests, fuzz tests.

[pedrovalido]

I've implemented the rest of test for errors that were missing along with some notes in the form of comments. Let me know what else I can test/improve/discuss

[0xdcota]

@pedrovalido feel free to merge.