Regenerated the libwebp wrapper so it matches the library layout

[stemann]

Regenerated src/Wrapper.jl from gen so the wrapper matches libwebp_jlls library layout.

The Clang.jl-based generator emitted every wrapper against libwebp even though libwebp_jll splits the API across libwebp, libwebpdemux, and libwebpmux. That mismatch left demux and mux entry points bound to the wrong shared library and broke animated and container-related APIs at runtime.

Updated the generator configuration to route declarations from demux.h to libwebpdemux and declarations from mux.h and mux_types.h to libwebpmux. Added an ignorelist for inline-only convenience wrappers because those names appear in the headers but are not exported by the shared libraries, so generating Julia ccall wrappers for them would create invalid bindings.

[stemann]

Remedies #13

[codecov]

Codecov Report

❌ Patch coverage is 0% with 44 lines in your changes missing coverage. Please review.
✅ Project coverage is 32.25%. Comparing base (2391e30) to head (b8a91f2).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Wrapper.jl	0.00%	44 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #20      +/-   ##
==========================================
+ Coverage   28.72%   32.25%   +3.53%     
==========================================
  Files           5        5              
  Lines         383      341      -42     
==========================================
  Hits          110      110              
+ Misses        273      231      -42     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.