feat: selective download for meteo_imgw_daily

[bczernecki]

Bug fixes for minor problems found during downloading dataset with meteo_imgw_() family of functions + simultanously testing new feature for selectively downloading smaller amount of data if SYNOP dataset is requested

[Copilot]

Pull request overview

This PR introduces selective downloading for the meteo_imgw_daily function when requesting SYNOP station data, allowing users to download data for specific stations instead of all available stations. The changes also include bug fixes for handling station names with extra whitespace.

Changes:

• Added selective download feature for SYNOP stations by matching station names to WMO IDs
• Fixed station name handling by trimming whitespace from station names throughout the data processing
• Updated station filtering logic to properly handle multiple station names using unique() and unlist()

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 9 comments.

File	Description
R/meteo_imgw_daily.R	Added selective download logic for SYNOP stations, trimws() calls for station names, and improved station filtering
man/meteo_imgw_daily.Rd	Updated documentation to clarify station parameter accepts vectors and explain handling of renamed stations
NEWS.md	Added version 1.2.6 changelog documenting the selective download feature and whitespace fix
DESCRIPTION	Bumped package version from 1.2.5 to 1.2.6

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[codecov]

Codecov Report

❌ Patch coverage is 90.71618% with 35 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.99%. Comparing base (4001281) to head (c8e8a7e).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
R/meteo_imgw_hourly.R	83.80%	17 Missing ⚠️
R/meteo_imgw_monthly.R	90.47%	10 Missing ⚠️
R/meteo_imgw_daily.R	95.62%	6 Missing ⚠️
R/hydro_imgw_daily.R	91.66%	1 Missing ⚠️
R/match_imgw_wmoid_inds.R	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #117      +/-   ##
==========================================
+ Coverage   87.25%   92.99%   +5.73%     
==========================================
  Files          32       33       +1     
  Lines        1781     1884     +103     
==========================================
+ Hits         1554     1752     +198     
+ Misses        227      132      -95     

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