fix/feature: Bun "zsh" completions for commands with colons

[ragokan]

What does this PR do?

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes
• Changes for ZSH completions

Problem

• https://github.com/oven-sh/bun/issues/10391
• When a script has colon in name, it was not reading it correctly, so, it was not completing. For example: "start:dev" or "db:migrate" wasn't working properly.

Solution

• Replace "bun getcompletes i" and "bun getcompletes s" with "bun getcompletes z" which also gives the value of script.
• Add some regexes to not split from ":", instead use spaces.

Extra

• Thanks to "bun getcompletes z", we also get what a script do, so I also added them. Results;

What is missing?

• It truncates the value, I don't know why yet.