Add holopin.yml config for GHC2023 event

[marcduiker]

Description

Added holopin config file required to issue badges for the GHC2023 event. More info https://github.com/dapr/community/issues/351

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: https://github.com/dapr/community/issues/351

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• [ ] Code compiles correctly
• [ ] Created/updated tests
• [ ] Extended the documentation

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (f9eedff) 86.42% compared to head (b136f5b) 86.42%.

:exclamation: Current head b136f5b differs from pull request most recent head 8e8f88e. Consider uploading reports for the commit 8e8f88e to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #601 +/- ## ======================================= Coverage 86.42% 86.42% ======================================= Files 74 74 Lines 3595 3595 ======================================= Hits 3107 3107 Misses 488 488 ```

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