### Problem description
The default result export functionality of the Find tool is limited to
only exporting data in a nonstandard text format. This PR adds support
for exporting the results in CSV, TSV or JSON format. The PR also
removes the old format.
### Implementation description
I added the classes `ExportFormatter`, `ExportFormatterCsv`,
`ExportFormatterTsv` and `ExportFormatterJson`, with similar
implementations to the pattern data exporters.
~~I also moved the `ViewFind::Occurrence` class into
`hex/helpers/types.hh`, so the exporters can access it.~~
### Screenshots
### Additional things
Another small change I made is moving the "{} entries found" line on the
same line as the Search and Reset buttons. I think it looks cleaner this
way, but if anyone disagrees, I can revert it.
---------
Co-authored-by: WerWolv <werwolv98@gmail.com>
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### Problem description
<!-- Describe the bug that you fixed/feature request that you
implemented, or link to an existing issue describing it -->
When entering for the end value the same value as the start it is not
recorgnized as valid region, because end must be strictly greater than
begin. Due to the +1 in the Region constructor this is not correct,
because the end is included in the range.
### Implementation description
<!-- Explain what you did to correct the problem -->
### Screenshots
<!-- If your change is visual, take a screenshot showing it. Ideally,
make before/after sceenshots -->
After:
### Additional things
<!-- Anything else you would like to say -->
