feat: create standalone native fnOS repository

app-src/internal/nginx/pid_export.go

@@ -0,0 +1,11 @@
+package nginx
+
+// ReadPID reads a PID from the given pid file.
+func ReadPID(path string) (int, error) {
+	return readPIDFile(path)
+}
+
+// IsPIDAlive reports whether the process with the given PID is running.
+func IsPIDAlive(pid int) bool {
+	return isPIDAlive(pid)
+}