Enable shell completion automatically

Overview

In https://gitlab.com/gitlab-org/gitlab-development-kit/-/blob/main/doc/howto/shell_completion.md we describe how to enable useful shell completion for bash and zsh.

Proposed solution

Allow GDK to adjust shell profiles to enable shell completion if the 🆕 GDK config setting gdk.shell_completion is set to true (can be false by default).

Addition and removal shell completion is handled by gdk reconfigure.

Impact

• Automating shell completion setup saves time for each GitLab developer, reducing command lookup and eliminating typing errors.
• New developers can get productive faster with automatic configuration of helpful shell tools.
• Ensures consistent developer environment configuration across the organization.
• Eliminates manual steps that developers might skip, increasing adoption of productivity-enhancing tools.

Implementation

• Support auto-completion for :
  • GRD
  • Local installation - all supported platforms

Impact measurements

• Track the usability errors due to mistyped commands or attributes in both local and remote dev environments.

Theme

The following categories relate to this issue:

• gdk-reliability - e.g. When a GDK action fails to complete.
• gdk-usability - e.g. Improvements or suggestions around how the GDK functions.
• gdk-performance - e.g. When a GDK action is slow or times out.