accounts: Move to instance methods, fix races and isolate tests (#1923)

* Bybit: Fix race in TestUpdateAccountInfo and  TestWSHandleData

* DriveBy rename TestWSHandleData
* This doesn't address running with -race=2+ due to the singleton

* Accounts: Add account.GetService()

* exchange: Assertify TestSetupDefaults

* Exchanges: Add account.Service override for testing

* Exchanges: Remove duplicate IsWebsocketEnabled test from TestSetupDefaults

* Dispatch: Replace nil checks with NilGuard

* Engine: Remove deprecated printAccountHoldingsChangeSummary

* Dispatcher: Add EnsureRunning method

* Accounts: Move singleton accounts service to exchange Accounts

* Move singleton accounts service to exchange Accounts

This maintains the concept of a global store, whilst allowing exchanges
to override it when needed, particularly for testing.

APIServer:

* Remove getAllActiveAccounts from apiserver

Deprecated apiserver only thing using this, so remove it instead of
updating it

* Update comment for UpdateAccountBalances everywhere

* Docs: Add punctuation to function comments

* Bybit: Coverage for wsProcessWalletPushData Save

gctrpc/rpc.swagger.json

@@ -1064,14 +1064,14 @@
         ]
       }
     },
-    "/v1/getaccountinfo": {
+    "/v1/getaccountbalances": {
       "get": {
-        "operationId": "GoCryptoTraderService_GetAccountInfo",
+        "operationId": "GoCryptoTraderService_GetAccountBalances",
         "responses": {
           "200": {
             "description": "A successful response.",
             "schema": {
-              "$ref": "#/definitions/gctrpcGetAccountInfoResponse"
+              "$ref": "#/definitions/gctrpcGetAccountBalancesResponse"
             }
           },
           "default": {
@@ -1100,9 +1100,9 @@
         ]
       }
     },
-    "/v1/getaccountinfostream": {
+    "/v1/getaccountbalancesstream": {
       "get": {
-        "operationId": "GoCryptoTraderService_GetAccountInfoStream",
+        "operationId": "GoCryptoTraderService_GetAccountBalancesStream",
         "responses": {
           "200": {
             "description": "A successful response.(streaming responses)",
@@ -1110,13 +1110,13 @@
               "type": "object",
               "properties": {
                 "result": {
-                  "$ref": "#/definitions/gctrpcGetAccountInfoResponse"
+                  "$ref": "#/definitions/gctrpcGetAccountBalancesResponse"
                 },
                 "error": {
                   "$ref": "#/definitions/rpcStatus"
                 }
               },
-              "title": "Stream result of gctrpcGetAccountInfoResponse"
+              "title": "Stream result of gctrpcGetAccountBalancesResponse"
             }
           },
           "default": {
@@ -4283,14 +4283,14 @@
         ]
       }
     },
-    "/v1/updateaccountinfo": {
+    "/v1/updateaccountbalances": {
       "get": {
-        "operationId": "GoCryptoTraderService_UpdateAccountInfo",
+        "operationId": "GoCryptoTraderService_UpdateAccountBalances",
         "responses": {
           "200": {
             "description": "A successful response.",
             "schema": {
-              "$ref": "#/definitions/gctrpcGetAccountInfoResponse"
+              "$ref": "#/definitions/gctrpcGetAccountBalancesResponse"
             }
           },
           "default": {
@@ -5852,7 +5852,7 @@
         }
       }
     },
-    "gctrpcGetAccountInfoResponse": {
+    "gctrpcGetAccountBalancesResponse": {
       "type": "object",
       "properties": {
         "exchange": {