build: support BUILD_SHARED_LIBS option for lvgl_linux library

[ychsiao168]

• Remove hardcoded STATIC from add_library() to respect BUILD_SHARED_LIBS
• Adjust wayland-scanner to use public-code for shared libs, private-code for static
• Fix lvglsim linking by repeating lvgl_linux to resolve circular dependency
• Add LIBRARY destination to install() for shared library support"

Tested on WSL:

• ✅ Shared build (-DBUILD_SHARED_LIBS=ON)
• ✅ Static build (-DBUILD_SHARED_LIBS=OFF)
• ✅ Both lvglsim executables run correctly
• ✅ make install works for both configurations

---

Summary by cubic

Add shared library support to lvgl_linux by respecting BUILD_SHARED_LIBS. Updates Wayland protocol generation and lvglsim linking so both shared and static builds compile and install cleanly.

• New Features

  • Library type now follows BUILD_SHARED_LIBS (removed hardcoded STATIC).
  • wayland-scanner uses public-code for shared, private-code for static.
  • lvglsim links lvgl_linux, lvgl, lvgl_linux to resolve circular dependency.
  • Added LIBRARY DESTINATION to install(TARGETS) for shared library installs.

• Migration

  • Build with -DBUILD_SHARED_LIBS=ON for shared, OFF for static; no other changes.

^{Written for commit bcb93ab. Summary will update automatically on new commits.}

[cubic-dev-ai]

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