Bug: token-swap Anchor program

[a-hariti]

The token-swap anchor program has a logic bug,

specifically a in the deposit_liquidity instruction when it calculates the LP tokens to award the depositor based on the pool tokens ratio.

It should be ratio = Pool token A / Pool Token B, currently it's doing a multiplication:

program-examples/tokens/token-swap/anchor/programs/token-swap/src/instructions/deposit_liquidity.rs

Lines 40 to 42 in d7fcf99

	let ratio = I64F64::from_num(pool_a.amount)
	.checked_mul(I64F64::from_num(pool_b.amount))
	.unwrap();

I have prepared a solution in #505