feat(Shopify Node): Add OAuth support (#3389)

* ⚡ wip

* ⚡ Add includeAccessTokenInHeader option to OAuth2

* 🔨 fixed build error, fixed trigger node when using token auth

* 🔨 fixed trigger when using oauth2

* 🔨 changed default auth method to access token

* ⚡ Improvements

* ⚡ Improvements

* ⚡ Improvements

* ⚡ Rename includeAccessTokenInHeader to keyToIncludeInAccessTokenHeader

* ⚡ Assign values to only header property

* 🔥 Remove unreachable code

* ⚡ Add keyToIncludeInAccessTokenHeader when isN8nRequest

* ⚡ Add CC grant type when isN8nRequest

Co-authored-by: Ricardo Espinoza <ricardo@n8n.io>
Co-authored-by: ricardo <ricardoespinoza105@gmail.com>
Co-authored-by: Jan Oberhauser <janober@users.noreply.github.com>

packages/nodes-base/nodes/HttpRequest/HttpRequest.node.ts

@@ -1216,6 +1216,10 @@ export class HttpRequest implements INodeType {
 					boxOAuth2Api: {
 						includeCredentialsOnRefreshOnBody: true,
 					},
+					shopifyOAuth2Api: {
+						tokenType: 'Bearer',
+						keyToIncludeInAccessTokenHeader: 'X-Shopify-Access-Token',
+					},
 				};
 
 				const additionalOAuth2Options = oAuth2Options[nodeCredentialType];