Add 2 new FBref load functions

[tonyelhabr]

Adds load_fb_match_summary() and load_fb_advanced_match_stats().

Appendix

• Unfortunately, I initiated the data scraped prior to Add column for player ID to 3 FBref functions #328, so I'll need to backfill at some point. Nonetheless, there are many seasons and leagues worth of data already scraped and published in the worldfootballR_data repo.
• Long term, we may consider consolidating the logic for the load_ functions, since most follow the same pattern.

[codecov-commenter]

Codecov Report

Merging #330 (f1bb257) into main (e508a1e) will increase coverage by 0.34%.
Report is 4 commits behind head on main.
The diff coverage is 98.27%.

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@@            Coverage Diff             @@
##             main     #330      +/-   ##
==========================================
+ Coverage   62.83%   63.18%   +0.34%     
==========================================
  Files          44       44              
  Lines        3552     3583      +31     
==========================================
+ Hits         2232     2264      +32     
+ Misses       1320     1319       -1     

Files Changed	Coverage Δ
R/fb_player_match_logs.R	96.66% <96.42%> (+0.05%)	⬆️
R/load_fb.R	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

[JaseZiv]

lgtm.

Agree with your point about consolidation at some point.

Have left this unmerged in case you needed to add anything to it. If not, merge it whenever you're ready.

Thanks heaps @tonyelhabr