refactor: change Product struct, remove YieldTokenIncidents contract

contracts/interfaces/ICoverProducts.sol

@@ -17,7 +17,9 @@ struct ProductInitializationParams {
 
 struct Product {
   uint16 productType;
-  address yieldTokenAddress;
+  uint16 minPrice;
+  // leftover memory gap from the previously used address field yieldTokenAddress
+  uint144 __gap;
   // cover assets bitmap. each bit represents whether the asset with
   // the index of that bit is enabled as a cover asset for this product
   uint32 coverAssets;

contracts/interfaces/IMasterAwareV2.sol

@@ -14,11 +14,11 @@ interface IMasterAwareV2 {
     SP, // StakingProducts.sol
     PS, // LegacyPooledStaking.sol
     GV, // Governance.sol
-    GW, // LegacyGateway.sol - removed
-    CL, // CoverMigrator.sol - removed
+    UNUSED_GW, // LegacyGateway.sol - removed
+    UNUSED_CL, // CoverMigrator.sol - removed
     AS, // Assessment.sol
     CI, // IndividualClaims.sol - Claims for Individuals
-    CG, // YieldTokenIncidents.sol - Claims for Groups
+    UNUSED_CG, // YieldTokenIncidents.sol - Claims for Groups -- removed
     RA, // Ramm.sol
     ST,  // SafeTracker.sol
     CP  // CoverProducts.sol