Better way to calculate Transaction Weight given an Escrow Type

[storopoli]

Right now we hardcode 200 vbytes in

scrow/src/util.rs

Lines 15 to 19 in 3b4d5f7

	/// P2TR Transaction weight for 1 input and 1 output.
	///
	/// Used to calculate the fee for the transaction that spends the escrow.
	/// This is a conservative measure to ensure sufficient fees.
	pub(crate) const P2TR_TX_WEIGHT_FUNDING: u64 = 200;

But we should determine give the escrow type (A, B, or C) the transaction weight to get better fees estimates.