Optimize Volume Lockup Transfer Manager

[tanpv]

Please check if the PR fulfills these requirements

• [DONE ] The commit message follows our Submission guidelines
• [DONE] Tests for the changes have been added (for bug fixes / features)
• [DONE ] Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce?

• Optimize for cleaner verifyTransfer algorithm

What is the current behavior?

• Optimize algorithm for issue Module Development Task: Lockup Volume Restrictions #287
• Reduce calculation in order to verify transfer

What is the new behavior?

• Remove "alreadyWithdrawn" from "LockUp" struct
• Add function "_getInvestorCurrentLockUpAmount"
• Change logic inside "verifyTransfer"

Does this PR introduce a breaking change?

• No breaking change
• All tests are run passed

Any Other information:

[satyamakgec]

Thanks, @tanpv for your work but we optimize in #409 PR