(Exchange) Add FTX exchange support with implementation tutorial (thr…

…asher-corp#495)

* initial

* wip

* brokenwip

* broken wipzzzz

* more functions

brokenwip

NO API KEYS

* broken wip

* WIP

* wip

* WIP

work in progress

* WIP

* WIP

* wip

* more wip

* wip

* ws wip

* broken wip

* adding new functions for websocket to work

* trying to fix websocket issues

* websocket bug fix wip

* broken websocket implementation

* WS unauth functions + brokenWS auth func

* authentication problems

* authentication problems fixed

* data handling for websocket

* websocket completed

* remove verbose

* minor error fix changes and testing

* reorganising variable declarations and minor errors fixed

* enabled exchanges updated

* enabled exchanges fixed

* remove keys

* glorious nits

* xdta n shazzy nitzzz

* shazzy n thrasher nitz

* nitz wip

* broken wip

* apichecker donee n make code better

* apichecker donee n make code better

* OB update

* wip

* wip

* all nitz done

* merge conflicts

* go mod tidy

* merge conflicts

* PLEASE merge conflicts

* new funcs added n binanceapi check update

NO APIKEYS

* basic tests

* linter fixs

* linter fixs

* remove verbose

* test errors fixed

* remove comented code

* minor changes

* some tests fixed

no apikeys

* documentation work

* documentation

* wip

* ryan nitz

* nits addressed

* unnecessary conversion

* no fail

* remove verbose

* type field checking

* broken

* websocket nits fixed

* some thangs

* remove verbose

* fix function

* linter issues

* test error fixed

* nits

* bumperino fixed

* very small change

* nits

* errors fixing

* errors fixing retry

* linters

* thrasher glorious nits

* more changes

* changes

* 2 more changes to be addressed

* 2 more changes to be addressed

* issues addressed

* whip

* changes

* missed change

* changes

* currency issues

* changes

* unsaved

* int64

* HUGE

* HUGE

* NO NITS PLS

* no more

* YES

* :

* changes

* PLEASE

* n another one

* thanks guys

* ill believe in god if this ever ends

* :D

README.md

@@ -30,6 +30,7 @@ Join our slack to discuss all things related to GoCryptoTrader! [GoCryptoTrader
 | BTSE | Yes | Yes | NA |
 | COINUT | Yes | Yes | NA |
 | Exmo | Yes | NA | NA |
+| FTX | Yes | Yes | No |
 | CoinbasePro | Yes | Yes | No|
 | Coinbene | Yes | No | No |
 | GateIO | Yes | Yes | NA |
@@ -139,10 +140,10 @@ Binaries will be published once the codebase reaches a stable condition.
 
 |User|Contribution Amount|
 |--|--|
-| [thrasher-](https://github.com/thrasher-) | 639 |
+| [thrasher-](https://github.com/thrasher-) | 640 |
 | [shazbert](https://github.com/shazbert) | 191 |
 | [gloriousCode](https://github.com/gloriousCode) | 169 |
-| [dependabot-preview[bot]](https://github.com/apps/dependabot-preview) | 46 |
+| [dependabot-preview[bot]](https://github.com/apps/dependabot-preview) | 48 |
 | [xtda](https://github.com/xtda) | 43 |
 | [ermalguni](https://github.com/ermalguni) | 14 |
 | [vadimzhukck](https://github.com/vadimzhukck) | 10 |