fix:[#411] stacks update asks for new list of pkgs

[jardon]

this PR addresses both of the below issues in one sweep. it reworks the prompting of the user for an update.

• stacks update asks if pkgs need to be updated
• takes a space-separated list of packages to replace

jardon@lagann:~/Projects/apx$ ./apx stacks update noble
 INFO  Type a new base or confirm the current one (ubuntu:noble):

 INFO  Choose a new package manager or confirm the current one (apt):

 INFO  You have not provided any packages to install in the stack. Do you want to add some now?[y/N]
y
 INFO  Type the packages you want to install in the stack, separated by a space:
neofetch vim
 INFO  Updated stack 'noble'.
jardon@lagann:~/Projects/apx$ ./apx stacks update noble
 INFO  Type a new base or confirm the current one (ubuntu:noble):

 INFO  Choose a new package manager or confirm the current one (apt):

 INFO  Do you want to update the list of packages?[y/N]
       	 - neofetch
       	 - vim
y
 INFO  Type the packages you want to install in the stack, separated by a space:
neofetch vim git
 INFO  Updated stack 'noble'.
jardon@lagann:~/Projects/apx$ ./apx stacks update noble
 INFO  Type a new base or confirm the current one (ubuntu:noble):

 INFO  Choose a new package manager or confirm the current one (apt):

 INFO  Do you want to update the list of packages?[y/N]
       	 - neofetch
       	 - vim
       	 - git
n
 INFO  Updated stack 'noble'.
jardon@lagann:~/Projects/apx$ ./apx stacks update noble
 INFO  Type a new base or confirm the current one (ubuntu:noble):

 INFO  Choose a new package manager or confirm the current one (apt):

 INFO  Do you want to update the list of packages?[y/N]
       	 - neofetch
       	 - vim
       	 - git
y
 INFO  Type the packages you want to install in the stack, separated by a space:

 INFO  Updated stack 'noble'.
jardon@lagann:~/Projects/apx$ ./apx stacks show noble
┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼
┊ Name            ┊ noble        ┊
┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼
┊ Base            ┊ ubuntu:noble ┊
┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼
┊ Packages        ┊              ┊
┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼
┊ Package manager ┊ apt          ┊
┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼┄┄┄┄┄┄┄┄┄┄┄┄┄┄┼

closes #409
closes #411

[jardon]

i will say, before this is approved and merged, the prompt doesn't make sense with the -y / --assume-yes option. it would make more sense to me if the option was something along the lines of --no-prompt

[mirkobrombin]

Makes sense, I do agree with this

[jardon]

should this be changed throughout the tooling then @mirkobrombin ? or would you rather that be isolated to the update stacks command? i would prefer the consistency of changing all of them, but there may be some show stoppers I'm unaware of

[mirkobrombin]

I would go the consistency way