JBAddToBalanceMode
Options for how a JBSucker's amountToAddToBalance gets added to its project's balance.
Notes:
- 
element: MANUAL The amount gets added to the project's balance manually by calling
addOutstandingAmountToBalance. - 
element: ON_CLAIM The amount gets added to the project's balance automatically when
claimis called. 
enum JBAddToBalanceMode {
    MANUAL,
    ON_CLAIM
}