fix: Add -lpthread to link Bazel BUILD options (#189)

* fix: Add -pthread link option to Bazel BUILD file
* fix: Use -lpthread instead of -pthread

BUILD

@@ -40,6 +40,7 @@ cc_library(
     includes = [
         "include",
     ],
+    linkopts = ["-lpthread"],
     visibility = ["//visibility:public"],
 )