binaries : Improve rpc-server and export-graph-ops names. (#25045)

Tests are generally prefixed with -test, so rename export-graph-ops
accordingly.

rpc-server is probably too generic a name for /usr/bin. Because it
should work with any ggml application, it is renamed to ggml-rpc-server.

tools/rpc/CMakeLists.txt

@@ -1,4 +1,4 @@
-set(TARGET rpc-server)
+set(TARGET ggml-rpc-server)
 add_executable(${TARGET} rpc-server.cpp)
 target_link_libraries(${TARGET} PRIVATE ggml)
 target_compile_features(${TARGET} PRIVATE cxx_std_17)