add new value in 3.3. Volume shell item，fix some bugs

[Woniuke]

I find some bugs in documents which make it shows incorrectly

[joachimmetz]

@Woniuke thx for the PR, I'll have a closer look when time permits, unfortunately time is limited at the moment, so this might take a bit

[codecov[bot]]

Codecov Report

Merging #18 (2f988f2) into main (a381170) will increase coverage by 7.18%. The diff coverage is 96.87%.

:exclamation: Current head 2f988f2 differs from pull request most recent head 1537de1. Consider uploading reports for the commit 1537de1 to get more accurate results

@@            Coverage Diff             @@
##             main      #18      +/-   ##
==========================================
+ Coverage   52.49%   59.68%   +7.18%     
==========================================
  Files          42       33       -9     
  Lines        3821     2865     -956     
==========================================
- Hits         2006     1710     -296     
+ Misses       1815     1155     -660     

Impacted Files	Coverage Δ
libfwsi/libfwsi_item.c	43.66% <80.00%> (-0.01%)	:arrow_down:
libfwsi/libfwsi_control_panel_cpl_file_values.c	85.71% <100.00%> (-11.51%)	:arrow_down:
libfwsi/libfwsi_uri_sub_values.c	47.50% <0.00%> (-20.80%)	:arrow_down:
libfwsi/libfwsi_game_folder_values.c	76.19% <0.00%> (-19.16%)	:arrow_down:
libfwsi/libfwsi_control_panel_values.c	76.19% <0.00%> (-19.16%)	:arrow_down:
libfwsi/libfwsi_control_panel_category_values.c	43.18% <0.00%> (-19.05%)	:arrow_down:
...ibfwsi/libfwsi_extension_block_0xbeef0001_values.c	43.18% <0.00%> (-19.05%)	:arrow_down:
...ibfwsi/libfwsi_extension_block_0xbeef0005_values.c	43.18% <0.00%> (-19.05%)	:arrow_down:
...ibfwsi/libfwsi_extension_block_0xbeef0019_values.c	43.18% <0.00%> (-19.05%)	:arrow_down:
...ibfwsi/libfwsi_extension_block_0xbeef0003_values.c	77.27% <0.00%> (-18.29%)	:arrow_down:
... and 32 more

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[Woniuke]

@Woniuke thx for the change, I'll have a closer look when time permits, unfortunately time is limited at the moment, so this might take a bit. Could you make this into a PR ?

:smile: Did you want me to make this commit as another PR?

[joachimmetz]

Did you want me to make this commit as another PR?

ah for some reason this looked like a separate change differently in the github UI, no need for an additional PR then