Improved Error

[jorgecarleitao]

Replaced Error::General and Error::External by Error::InvalidParameter and Error::FeatureNotSupported - General is not very insigthful and is not something the user can do much about.

Audited code for returning errors and adjusted them accordingly.

[codecov-commenter]

Codecov Report

Merging #181 (2711aee) into main (ced2f52) will increase coverage by 0.31%.
The diff coverage is 24.54%.

@@            Coverage Diff             @@
##             main     #181      +/-   ##
==========================================
+ Coverage   85.32%   85.63%   +0.31%     
==========================================
  Files          82       82              
  Lines        8108     8089      -19     
==========================================
+ Hits         6918     6927       +9     
+ Misses       1190     1162      -28     

Impacted Files	Coverage Δ
src/deserialize/binary.rs	75.00% <0.00%> (ø)
src/deserialize/boolean.rs	72.22% <0.00%> (ø)
src/deserialize/fixed_len.rs	73.46% <0.00%> (ø)
src/deserialize/native.rs	63.63% <0.00%> (ø)
src/deserialize/utils.rs	89.77% <0.00%> (ø)
src/encoding/plain_byte_array.rs	84.00% <0.00%> (ø)
src/metadata/column_chunk_metadata.rs	69.51% <0.00%> (+1.65%)	⬆️
src/metadata/row_metadata.rs	40.00% <0.00%> (ø)
src/metadata/schema_descriptor.rs	91.39% <0.00%> (+1.92%)	⬆️
src/page/mod.rs	74.80% <0.00%> (+2.75%)	⬆️
... and 24 more

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