Feat: Add support for ENS names in whitelist

[youngancient]

Currently, the CSV uploaded by the airdrop creator must have 2 columns: address and amount.
e.g Note the token is question has a decimal 18

Address	Amount
0x1234AbCd5678Ef9012Gh3456Ij7890Kl1234Mn	100000000000000000000
0x5678Ef90AbCd1234Ij9012GhKl3456Mn7890Op	250000000000000000000
0x9012Gh34Ij56Kl78Mn90AbCd1234Ef5678OpQr	300000000000000000000
0xAbCd9012EfGh3456IjKl5678Mn9012OpQr3456	50000000000000000000
0xEf9012Gh3456AbCd7890IjKlMn5678OpQr1234	75000000000000000000

It works perfectly. But suppose we have :

Address	Amount
0x1234AbCd5678Ef9012Gh3456Ij7890Kl1234Mn	100000000000000000000
0x5678Ef90AbCd1234Ij9012GhKl3456Mn7890Op	250000000000000000000
0x9012Gh34Ij56Kl78Mn90AbCd1234Ef5678OpQr	300000000000000000000
0xAbCd9012EfGh3456IjKl5678Mn9012OpQr3456	50000000000000000000
0xEf9012Gh3456AbCd7890IjKlMn5678OpQr1234	75000000000000000000
youngancient.eth	93000000000000000000

This CSV won't work because currently there's no support for ENS names.
Add support for ENS names based on the chain. When the user uploads the CSV, the ENS name should be resolved to the actual address, which could then be parsed as the rest.

[Belloabraham121]

@youngancient My lord let me work on this 🙇🏾

[youngancient]

Hi @Belloabraham121 thank you for your interest in tackling this issue. But currently, #46 and #61 are not completely finalized and this issue is directly affected by them. Hopefully by weekend it should be sorted, then I can assign