Move Points of interest to use tiles

[HarelM]

Fixes #1971

• Deleted POI is not in database #1971

This change the following:

1. It takes the POIs from a tile source and not from the server's database
2. It downloads an offline file to allow seeing the POIs when offline - assuming we use the current offline model - i.e. only paying customers will have offline POIs
3. Offline search is removed at this point in time

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[codecov]

Codecov Report

Attention: Patch coverage is 35.82090% with 86 lines in your changes are missing coverage. Please review.

Project coverage is 90.17%. Comparing base (7f0615d) to head (47b970c).
Report is 2 commits behind head on main.

Files	Patch %	Lines
...Hiking.Web/src/application/services/poi.service.ts	34.61%	81 Missing and 4 partials ⚠️
...rc/application/services/search-results.provider.ts	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1979      +/-   ##
==========================================
- Coverage   91.01%   90.17%   -0.84%     
==========================================
  Files          93       93              
  Lines        6820     6800      -20     
  Branches      982      978       -4     
==========================================
- Hits         6207     6132      -75     
- Misses        411      464      +53     
- Partials      202      204       +2     

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