Add Polish translation

[bieniu]

No description provided.

[AitorDB]

Thanks for the PR! Would you mind to add some of the new texts? Here's an updated example in English

{
  "Azimuth": "Azimuth",
  "Dawn": "Dawn",
  "Dusk": "Dusk",
  "Elevation": "Elevation",
  "Noon": "Solar noon",
  "Sunrise": "Sunrise",
  "Sunset": "Sunset",
  "errors": {
    "SunIntegrationNotFound": "Sun integration not found"
  }
}

[bieniu]

Done

[AitorDB]

That was quick! Thank you so much!