FTX: Margin lending/borrow rate history (#981)

* Adds lending rates/borrows to FTX and the command

* Movements, renames, rpc test

* Fleshing out rpc response

* Allows rpcserver to calculate offline (but not gctcli). Expands tests

* rn structs. add exchange_wrapper_issues support

* Adds a nice yearly rate

* Surprise yearly borrow rate!

* Rn+Mv to margin package. Fixes some serious whoopsies

* Adds average lend/borrow rates instead of sum

* rm oopsie whoopsie

* This is what the linter was having an issue with

* re-gen

* lintl

* niteroos

gctrpc/rpc.swagger.json

@@ -2176,6 +2176,102 @@
         ]
       }
     },
+    "/v1/getmarginrateshistory": {
+      "get": {
+        "operationId": "GoCryptoTraderService_GetMarginRatesHistory",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/gctrpcGetMarginRatesHistoryResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "exchange",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "asset",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "currency",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "startDate",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "endDate",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "getPredictedRate",
+            "in": "query",
+            "required": false,
+            "type": "boolean"
+          },
+          {
+            "name": "getLendingPayments",
+            "in": "query",
+            "required": false,
+            "type": "boolean"
+          },
+          {
+            "name": "getBorrowRates",
+            "in": "query",
+            "required": false,
+            "type": "boolean"
+          },
+          {
+            "name": "getBorrowCosts",
+            "in": "query",
+            "required": false,
+            "type": "boolean"
+          },
+          {
+            "name": "includeAllRates",
+            "in": "query",
+            "required": false,
+            "type": "boolean"
+          },
+          {
+            "name": "calculateOffline",
+            "in": "query",
+            "required": false,
+            "type": "boolean"
+          },
+          {
+            "name": "takerFeeRate",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          }
+        ],
+        "tags": [
+          "GoCryptoTraderService"
+        ]
+      }
+    },
     "/v1/getorder": {
       "post": {
         "operationId": "GoCryptoTraderService_GetOrder",
@@ -3888,6 +3984,17 @@
         }
       }
     },
+    "gctrpcBorrowCost": {
+      "type": "object",
+      "properties": {
+        "cost": {
+          "type": "string"
+        },
+        "size": {
+          "type": "string"
+        }
+      }
+    },
     "gctrpcCancelAllOrdersRequest": {
       "type": "object",
       "properties": {
@@ -5001,6 +5108,42 @@
         }
       }
     },
+    "gctrpcGetMarginRatesHistoryResponse": {
+      "type": "object",
+      "properties": {
+        "rates": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/gctrpcMarginRate"
+          }
+        },
+        "totalRates": {
+          "type": "string",
+          "format": "int64"
+        },
+        "sumBorrowCosts": {
+          "type": "string"
+        },
+        "avgBorrowSize": {
+          "type": "string"
+        },
+        "sumLendingPayments": {
+          "type": "string"
+        },
+        "avgLendingSize": {
+          "type": "string"
+        },
+        "latestRate": {
+          "$ref": "#/definitions/gctrpcMarginRate"
+        },
+        "predictedRate": {
+          "$ref": "#/definitions/gctrpcMarginRate"
+        },
+        "takerFeeRate": {
+          "type": "string"
+        }
+      }
+    },
     "gctrpcGetOrderRequest": {
       "type": "object",
       "properties": {
@@ -5178,6 +5321,17 @@
         }
       }
     },
+    "gctrpcLendingPayment": {
+      "type": "object",
+      "properties": {
+        "payment": {
+          "type": "string"
+        },
+        "size": {
+          "type": "string"
+        }
+      }
+    },
     "gctrpcListOfSignals": {
       "type": "object",
       "properties": {
@@ -5190,6 +5344,35 @@
         }
       }
     },
+    "gctrpcMarginRate": {
+      "type": "object",
+      "properties": {
+        "time": {
+          "type": "string"
+        },
+        "marketBorrowSize": {
+          "type": "string"
+        },
+        "hourlyRate": {
+          "type": "string"
+        },
+        "yearlyRate": {
+          "type": "string"
+        },
+        "hourlyBorrowRate": {
+          "type": "string"
+        },
+        "yearlyBorrowRate": {
+          "type": "string"
+        },
+        "lendingPayment": {
+          "$ref": "#/definitions/gctrpcLendingPayment"
+        },
+        "borrowCost": {
+          "$ref": "#/definitions/gctrpcBorrowCost"
+        }
+      }
+    },
     "gctrpcModifyOrderResponse": {
       "type": "object",
       "properties": {