Refactor naming scheme of class CapioFile

[marcoSanti]

This pull request refactors the CapioFile class, moving it within the context of the server/storage. It also refactor the names of the methods to better align with the names of the other refactored CAPIO classes. Finally it removes inline specifiers from the function methods as they are ineffective.

[GlassOfWhiskey]

LGTM

[codecov]

Codecov Report

❌ Patch coverage is 51.65563% with 73 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.49%. Comparing base (7b58291) to head (2983925).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
capio/server/include/remote/handlers/read.hpp	0.00%	1 Missing and 16 partials ⚠️
capio/server/include/handlers/read.hpp	20.00%	3 Missing and 9 partials ⚠️
capio/server/include/storage/capio_file.hpp	75.00%	7 Missing and 5 partials ⚠️
capio/tests/unit/server/src/storage_manager.cpp	0.00%	0 Missing and 7 partials ⚠️
capio/server/include/handlers/getdents.hpp	0.00%	1 Missing and 5 partials ⚠️
capio/server/include/handlers/stat.hpp	28.57%	0 Missing and 5 partials ⚠️
capio/server/include/remote/handlers/stat.hpp	0.00%	1 Missing and 3 partials ⚠️
capio/server/include/utils/common.hpp	40.00%	0 Missing and 3 partials ⚠️
capio/server/include/handlers/close.hpp	0.00%	1 Missing and 1 partial ⚠️
capio/server/include/handlers/seek.hpp	0.00%	0 Missing and 2 partials ⚠️
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #212      +/-   ##
==========================================
+ Coverage   62.43%   62.49%   +0.06%     
==========================================
  Files          76       76              
  Lines        3322     3317       -5     
  Branches     2048     2046       -2     
==========================================
- Hits         2074     2073       -1     
+ Misses        436      434       -2     
+ Partials      812      810       -2     

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