Remove filter.h and replace usage with celix_filter.h

[pnoltes]

This PR removes the filter.h header and replaces it usage with the celix_filter.h

[codecov-commenter]

Codecov Report

❌ Patch coverage is 71.42857% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.42%. Comparing base (88e228f) to head (1cbe1fd).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...ndles/remote_services/topology_manager/src/scope.c	71.42%	4 Missing ⚠️
libs/framework/src/service_registry.c	33.33%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #836   +/-   ##
=======================================
  Coverage   91.41%   91.42%           
=======================================
  Files         235      235           
  Lines       28686    28686           
=======================================
+ Hits        26223    26225    +2     
+ Misses       2463     2461    -2     

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[PengZheng]

Nice cleanup. LGTM

[PengZheng]

Shall we remove corresponding implementations altogether?
Note that without these declarations the corresponding symbols are not visible outside of the shared library.