feat: Fruity Blood Overdrive

[ttaschke]

• Adds a parser for Fruity Blood Overdrive
• Adds .fst file for testing Fruity Blood Overdrive parse testing

[ttaschke]

@demberto
This is a version with construct and the changes discussed in the draft PR.

I made the plugin_marker optional for now, as I was not able to get a .fst from an older plugin version. Also, I am still unsure how this would look like on a global (StructEventBase?) layer. Please let me know your thoughts on this.
https://github.com/demberto/PyFLP/pull/120/files#diff-7cbba45382f7949d6cb914fe5ee6fea2836260673dc3f868c15f2ae7ea0ce383R94

[codecov]

Codecov Report

Merging #120 (33ae7c0) into master (95f0742) will increase coverage by 0.08%.
The diff coverage is 100.00%.

❗ Current head 33ae7c0 differs from pull request most recent head f12e0bc. Consider uploading reports for the commit f12e0bc to get more accurate results

@@            Coverage Diff             @@
##           master     #120      +/-   ##
==========================================
+ Coverage   87.90%   87.98%   +0.08%     
==========================================
  Files          22       22              
  Lines        3273     3296      +23     
  Branches      392      392              
==========================================
+ Hits         2877     2900      +23     
  Misses        329      329              
  Partials       67       67              

Impacted Files	Coverage Δ
pyflp/mixer.py	86.07% <ø> (ø)
pyflp/plugin.py	89.62% <100.00%> (+0.42%)	⬆️
tests/test_plugin.py	100.00% <100.00%> (ø)

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[demberto]

Perfect :)