Merge #5010

5010: Make prepayment naming consistent r=EdHastingsCasperAssociation a=wojcik91

Make naming around future prepayment functionality more consistent:

- rename `StoredValue::Prepaid` to `StoredValue::Prepayment`.
- rename `StoredValueTag::Reservation` to `StoredValueTag::Prepayment`.
- rename `PrepaidKind` to `PrepaymentKind`.
- remove references to reservations in comments etc

Closes #4970


Co-authored-by: Maciej Wójcik <[email protected]>

execution_engine/src/runtime_context/mod.rs

@@ -753,7 +753,7 @@ where
             | StoredValue::ContractWasm(_)
             | StoredValue::MessageTopic(_)
             | StoredValue::Message(_)
-            | StoredValue::Prepaid(_)
+            | StoredValue::Prepayment(_)
             | StoredValue::EntryPoint(_)
             | StoredValue::RawBytes(_) => Ok(()),
         }

resources/test/sse_data_schema.json

@@ -3890,14 +3890,14 @@
           "additionalProperties": false
         },
         {
-          "description": "A reservation record.",
+          "description": "A prepayment record.",
           "type": "object",
           "required": [
-            "Prepaid"
+            "Prepayment"
           ],
           "properties": {
-            "Prepaid": {
-              "$ref": "#/definitions/PrepaidKind"
+            "Prepayment": {
+              "$ref": "#/definitions/PrepaymentKind"
             }
           },
           "additionalProperties": false
@@ -4763,7 +4763,7 @@
         }
       }
     },
-    "PrepaidKind": {
+    "PrepaymentKind": {
       "description": "Container for bytes recording location, type and data for a gas pre payment",
       "type": "object",
       "required": [