feat: Link history item transactions to block explorer

Description

Added new component TransactionHashLink and use it in the history list. This will link the transaction hash to the block explorer (https://github.com/BuidlGuidl/burnerwallet/issues/27)
In the Send Drawer, use the <Balance /> component so it's consistent with the <Header /> (https://github.com/BuidlGuidl/burnerwallet/issues/32)
In the Send Drawer, change button text to Insufficient Funds if the wallet doesn't have enough funds (https://github.com/BuidlGuidl/burnerwallet/issues/33)