feat: Add freeze all assets spell, integration for all assets (SC-243)

src/spells/EmergencySpell_SparkLend_FreezeAllAssets.sol

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+pragma solidity ^0.8.13;
+
+import { ISparkLendFreezerMom } from "src/interfaces/ISparkLendFreezerMom.sol";
+
+contract EmergencySpell_SparkLend_FreezeAllAssets {
+
+    address public immutable sparkLendFreezerMom;
+
+    bool public executed;
+
+    constructor(address sparklendFreezerMom_) {
+        sparkLendFreezerMom = sparklendFreezerMom_;
+    }
+
+    function freeze() external {
+        require(!executed, "FreezeAllAssetsSpell/already-executed");
+        executed = true;
+        ISparkLendFreezerMom(sparkLendFreezerMom).freezeAllMarkets();
+    }
+
+}

src/spells/EmergencySpell_SparkLend_FreezeSingleAsset.sol

@@ -8,12 +8,16 @@ contract EmergencySpell_SparkLend_FreezeSingleAsset {
     address public immutable sparkLendFreezerMom;
     address public immutable reserve;
 
+    bool public executed;
+
     constructor(address sparklendFreezerMom_, address reserve_) {
         sparkLendFreezerMom = sparklendFreezerMom_;
         reserve             = reserve_;
     }
 
     function freeze() external {
+        require(!executed, "FreezeSingleAssetSpell/already-executed");
+        executed = true;
         ISparkLendFreezerMom(sparkLendFreezerMom).freezeMarket(reserve);
     }