Implemented error handling for cases when the selected file is not a ZIM file.

[MohitMaliFtechiz]

Parent Issue #4002

• We retrieve the file name from the incoming Uri using DocumentFile (the official way to handle Uris) and check if it contains .zim or .zimma before proceeding with the copy/move operation. If the file name is null, we copy/move the file first and then validate it as a ZIM file using libkiwix. If valid, the file opens in our reader; otherwise, we revert the copy/move operation.
• Added UI and unit test cases for this new functionality.

XRecorder_30102024_162120.mp4

[codecov]

Codecov Report

Attention: Patch coverage is 25.92593% with 40 lines in your changes missing coverage. Please review.

Project coverage is 57.88%. Comparing base (ab3d8ff) to head (8f7ca9f).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
...ile/nav/destination/library/CopyMoveFileHandler.kt	18.75%	37 Missing and 2 partials ⚠️
...le/nav/destination/library/LocalLibraryFragment.kt	83.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4046      +/-   ##
============================================
- Coverage     58.04%   57.88%   -0.16%     
- Complexity     1514     1515       +1     
============================================
  Files           315      315              
  Lines         13125    13161      +36     
  Branches       1671     1676       +5     
============================================
  Hits           7618     7618              
- Misses         4403     4441      +38     
+ Partials       1104     1102       -2     

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