Put skip list in its own shared lib

Now we can right benchmarks against one api, and just change the library
path

Jenkinsfile

@@ -13,7 +13,8 @@ def CleanBuildAndTest(String cmakeArgs) {
         cd build
         ctest --no-compress-output --test-output-size-passed 100000 --test-output-size-failed 100000 -T Test -j `nproc` --timeout 90
         zstd Testing/*/Test.xml
-        ./conflict_set_bench
+        LD_LIBRARY_PATH=skip_list ./conflict_set_bench
+        LD_LIBRARY_PATH=radix_tree ./conflict_set_bench
         '''
     }
     xunit tools: [CTest(pattern: 'build/Testing/*/Test.xml')], reduceLog: false, skipPublishingChecks: false