Collection NFT Length
Get the size of an account's UFC collection.
Parameters:
- address: The Flow Address of the account whose moment data needs to be read
Returns Int - An int representing the accounts collection size. 
import NonFungibleToken from 0xNONFUNGIBLETOKENADDRESS
import UFC_NFT from 0xUFCNFTADDRESS
pub fun main(address: Address): Int {
    let account = getAccount(address)
    let collectionRef = account.getCapability(UFC_NFT.CollectionPublicPath)
            .borrow<&{NonFungibleToken.CollectionPublic}>()
        ?? panic("Could not borrow capability from public collection")
    return collectionRef.getIDs().length
}