Allow filtering based on traffic direction in inspection page

### Is there an existing issue for this? - [x] I have searched the existing issues. ### Describe the solution you'd like First of all, thanks for your work on that project. Now, today I encountered a case where I was trying to investigate what outbound traffic a specific program might generate. At that point, I felt like having a filter for the traffic direction would help me a lot to focus only on the outgoing traffic. I have already implemented that and I will open a PR. I have also added a couple of Greek translations (I'm Greek). Let me know what you think of that change. ### Is your feature request related to a problem? _No response_