fix: meteo_imgw_monthly

[bczernecki]

• adapting code to most recent changes in the IMGW-PIB repository:
  • fixes for meteo_imgw_monthly()
  • changes in metadata and downloading functions for hydrological datasets
  • updated Polish vignette for hydro dataset
  • added find_all_station_names() function to find all station names in the IMGW-PIB
    repository that match the provided name(s) and return all available datasets for
    those stations (e.g.entry "WARSZAWA" will also search for: "WARSZAWA-BIELANY",
    "WARSZAWA-OKECIE", "WARSZAWA-OBSERWATORIUM", etc.)

[codecov]

Codecov Report

❌ Patch coverage is 97.77778% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 87.81%. Comparing base (50c3684) to head (dfb043f).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
R/hydro_imgw_daily.R	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #122      +/-   ##
==========================================
- Coverage   90.54%   87.81%   -2.73%     
==========================================
  Files          33       33              
  Lines        1841     1839       -2     
==========================================
- Hits         1667     1615      -52     
- Misses        174      224      +50     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.