adds DroneHelper (#61)

#### 📖 Summary

- adds DroneHelper for build pipeline

#### 📑 Test Plan

> 💡 Select your test plan for the code changes.

- [x] Tested via Drone.io pipeline
- [ ] Custom test
- [ ] No test plan

##### Details / Justification

<!-- Add your test details or justification for missing tests here. -->

#### 📚 Additional Notes

- FileLint / Lint & Pester issues will be fixed in next PR

Co-authored-by: OCram85 <marco.blessing@googlemail.com>
Reviewed-on: #61

src/Item/New-CredentialStoreItem.Tests.ps1

@@ -142,5 +142,4 @@ Describe "New-CredentialStoreItem" {
             $writtenItem.GetNetworkCredential().Password | Should -Be 'mypasswd'
         }
     }
-
 }