Add Prettier for linting and fix Solhint config (#2697)

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

contracts/utils/escrow/Escrow.sol

@@ -5,19 +5,19 @@ pragma solidity ^0.8.0;
 import "../../access/Ownable.sol";
 import "../Address.sol";
 
- /**
-  * @title Escrow
-  * @dev Base escrow contract, holds funds designated for a payee until they
-  * withdraw them.
-  *
-  * Intended usage: This contract (and derived escrow contracts) should be a
-  * standalone contract, that only interacts with the contract that instantiated
-  * it. That way, it is guaranteed that all Ether will be handled according to
-  * the `Escrow` rules, and there is no need to check for payable functions or
-  * transfers in the inheritance tree. The contract that uses the escrow as its
-  * payment method should be its owner, and provide public methods redirecting
-  * to the escrow's deposit and withdraw.
-  */
+/**
+ * @title Escrow
+ * @dev Base escrow contract, holds funds designated for a payee until they
+ * withdraw them.
+ *
+ * Intended usage: This contract (and derived escrow contracts) should be a
+ * standalone contract, that only interacts with the contract that instantiated
+ * it. That way, it is guaranteed that all Ether will be handled according to
+ * the `Escrow` rules, and there is no need to check for payable functions or
+ * transfers in the inheritance tree. The contract that uses the escrow as its
+ * payment method should be its owner, and provide public methods redirecting
+ * to the escrow's deposit and withdraw.
+ */
 contract Escrow is Ownable {
     using Address for address payable;
 

contracts/utils/escrow/RefundEscrow.sol

@@ -17,19 +17,23 @@ import "./ConditionalEscrow.sol";
 contract RefundEscrow is ConditionalEscrow {
     using Address for address payable;
 
-    enum State { Active, Refunding, Closed }
+    enum State {
+        Active,
+        Refunding,
+        Closed
+    }
 
     event RefundsClosed();
     event RefundsEnabled();
 
     State private _state;
-    address payable immutable private _beneficiary;
+    address payable private immutable _beneficiary;
 
     /**
      * @dev Constructor.
      * @param beneficiary_ The beneficiary of the deposits.
      */
-    constructor (address payable beneficiary_) {
+    constructor(address payable beneficiary_) {
         require(beneficiary_ != address(0), "RefundEscrow: beneficiary is the zero address");
         _beneficiary = beneficiary_;
         _state = State.Active;
@@ -71,7 +75,7 @@ contract RefundEscrow is ConditionalEscrow {
     /**
      * @dev Allows for refunds to take place, rejecting further deposits.
      */
-    function enableRefunds() public onlyOwner virtual {
+    function enableRefunds() public virtual onlyOwner {
         require(state() == State.Active, "RefundEscrow: can only enable refunds while active");
         _state = State.Refunding;
         emit RefundsEnabled();