improve(coingecko): Export class + extra types (#78)

Both of these types are returned by functions in the CoinGecko class.

Ref: ACX-125

src/coingecko/Coingecko.ts

@@ -8,14 +8,14 @@ export function msToS(ms: number) {
   return Math.floor(ms / 1000);
 }
 
-type CoinGeckoAssetPlatform = {
+export type CoinGeckoAssetPlatform = {
   id: string;
   chain_identifier: number;
   name: string;
   shortname: string;
 };
 
-type CoinGeckoPrice = {
+export type CoinGeckoPrice = {
   address: string;
   timestamp: number;
   price: number;
@@ -167,4 +167,3 @@ export class Coingecko {
     }
   }
 }
-export default Coingecko;

src/coingecko/index.ts

@@ -0,0 +1 @@
+export * from "./Coingecko";

src/index.ts

@@ -4,3 +4,4 @@ export * as transfersHistory from "./transfers-history";
 export * as relayFeeCalculator from "./relayFeeCalculator";
 export * as utils from "./utils";
 export * as contracts from "./contracts";
+export * as coingecko from "./coingecko";