[H-05] Not minting iPTs for lenders in several lend functions

[code423n4]

Lines of code

https://github.com/code-423n4/2022-06-illuminate/blob/912be2a90ded4a557f121fe565d12ec48d0c4684/lender/Lender.sol#L247-L305
https://github.com/code-423n4/2022-06-illuminate/blob/912be2a90ded4a557f121fe565d12ec48d0c4684/lender/Lender.sol#L317-L367
https://github.com/code-423n4/2022-06-illuminate/blob/912be2a90ded4a557f121fe565d12ec48d0c4684/lender/Lender.sol#L192-L235

Vulnerability details

Impact

Using any of the lend function mentioned, will result in loss of funds to the lender - as the funds are transferred from them but no iPTs are sent back to them!
Basically making lending via these external PTs unusable.

Proof of Concept

There is no minting of iPTs to the lender (or at all) in the 2 lend functions below:
https://github.com/code-423n4/2022-06-illuminate/blob/912be2a90ded4a557f121fe565d12ec48d0c4684/lender/Lender.sol#L247-L305
https://github.com/code-423n4/2022-06-illuminate/blob/912be2a90ded4a557f121fe565d12ec48d0c4684/lender/Lender.sol#L317-L367

Corresponding to lending of (respectively):
swivel
element

Furthermore, in:
https://github.com/code-423n4/2022-06-illuminate/blob/912be2a90ded4a557f121fe565d12ec48d0c4684/lender/Lender.sol#L227-L234
Comment says "Purchase illuminate PTs directly to msg.sender", but this is not happening. sending yield PTs at best.

Recommended Mitigation Steps

Mint the appropriate amount of iPTs to the lender - like in the rest of the lend functions.