[APP] DHL Global Forwarding - Push API

**Name of app / service**
DHL Global Forwarding - Push API

**Link to developer documentation**
https://developer.dhl.com/api-reference/dgf-push-api

**Is lack of support preventing you from moving forward, or do you have a workaround?**
Yes

**Are there specific actions or triggers, you'd like to see for this app? Please let us know here or use the Action and Trigger issue templates to open requests for each!**
POST -> /subscription Create request for subscription
GET -> /subscription/{id} Get subscription details
POST -> /subscription/{id} Activate subscription
DELETE -> /subscription/{id} Remove subscription
GET -> /subscriptions Get subscriptions list

**Context**
See: https://github.com/PipedreamHQ/pipedream/issues/18058#issuecomment-3231793208