Add libtool dep for all distros

[victor-canard-duchene]

On Ubuntu 22.04.5, running distro_deps and then setup_pash fails as it is missing libtool as a dep.

I added it to the distro deps script as a pkg dep for all distros, but have only tested it for Ubuntu.
The other distros should behave the same as libtool is a GNU dep called by libdash.

[github-actions]

OS:ubuntu-24.04
Mon Nov 3 23:33:07 UTC 2025
intro: 3/3 tests passed.
interface: 202/202 tests passed.
compiler: 100/100 tests passed.

[angelhof]

Thanks a lot!

Could you sign the commits off for the DCO to pass? Here are the instructions:

To add your Signed-off-by line to every commit in this branch:

• Ensure you have a local copy of your branch by checking out the pull request locally via command line.
• In your local branch, run: git rebase HEAD~2 --signoff
• Force push your changes to overwrite the branch: git push --force-with-lease origin add-libtool-dep

Once you do that we will merge!

[github-actions]

OS:ubuntu-24.04
Tue Nov 4 22:10:28 UTC 2025
intro: 3/3 tests passed.
interface: 202/202 tests passed.
compiler: 100/100 tests passed.