[FEATURE] Computer Networking Labs

[Akash6222]

This feature is made for computer networking labs:-

• add ns, tclcl and nam zst packages in https://github.com/tcet-opensource/tcet-linux-applications
• append these package name in

  tcet-linux/packages.x86_64

  Line 280 in 3d53bf6
• Rolling release support

[Akash6222]

There was issue with encoding utf8 in tk package to solve that we needed to run
sudo sed -i 's/-encoding utf-8/ /g' /usr/lib/tk8.6/tk.tcl
sudo sed -i 's/-encoding utf-8/ /g' /usr/lib/tk8.6/ttk/ttk.tcl

[Akash6222]

So we took source code https://www.tcl-lang.org/software/tcltk/8.6.html and compiled and build zst and pushed to repo and applications repo
Now we don't have to run above command manually, just install nam,ns,tk tclcl,tk and otcl and done it will work fine

Below is this tk repo
https://github.com/tcet-opensource/tcet-linux-tk