fix: use add_shflags to force-link libinfiniops.so on shared library targets

The `infiniop` target is `set_kind("shared")`, so xmake ignores
`add_ldflags` during linking. Switch to `add_shflags` with
`--no-as-needed` so the GNU linker keeps `libinfiniops.so` in the
`NEEDED` list even when no direct symbol references exist in
`infiniop`'s own object files.

Author: voltjia

xmake.lua

@@ -394,7 +394,7 @@ target("infiniop")
         add_includedirs(get_config("infiniops") .. "/src")
         add_includedirs(get_config("infiniops") .. "/generated/include")
         add_linkdirs(get_config("infiniops") .. "/build/src")
-        add_links("infiniops")
+        add_shflags("-Wl,--no-as-needed,-linfiniops,--as-needed", {force = true})
         add_rpathdirs(get_config("infiniops") .. "/build/src")
     end
     add_files("src/infiniop/devices/handle.cc")