Add "Query coverage" parameter to BLAST output

When a BLAST search is done in UGENE, the additional information about a found result is stored in the qualifiers of the BLAST result annotation.

The original BLAST software (e.g. the NCBI online service) provides "Query coverage" information about a BLAST result - the percent of the query sequence that overlaps the subject sequence (see the screenshot).

UGENE does not provide it now (there is no such qualifier in the output).

It must be added to the BLAST output, both for NCBI BLAST and local BLAST.

Note that BLAST allows outputting the results in different formats. The output format, currently parsed in UGENE, does not contain that information. So, to implement this issue, it is required to switch to another BLAST output format.