Fix loanApply and make tests
test LoanService::changeLoanStage
Refactor getAcceptedBids in LoanServiceTest
Fix artisan command
Fix transaction service
Fix LoanService
Add transactionService to LoanserviceTest
Test LoanService::getChangedBid
Test LoanService::refundLenders
Fix test LoanService::applyForLoan
Optimise Transaction service
Refactor LoanService::placeBid
Test LoanService::CreateBid
Add amount_raised to loans schema
Fix Loan::createFromData
Add amount_raised field to LoanService::addToLoanIndex
Update testApplyForLoan to add amount_raised
Update GenerateModelData::Loan
Add Loan::calculateAmountRaised
Update LoanService