Add repository navigation option (-r) to icd command

[vivu001]

Feature idea

Extend the icd command by introducing a repository navigation option -r that allows users to directly navigate not only to a project but also into a specific repository within that project.

The new option should enhance the current navigation behavior by supporting both explicit and implicit repository selection.

Expected behavior:

1. Basic usage (no argument)

icd -p IDEasy -r

No repository name is provided → fallback to the <project-name>.

2. Explicit repository selection

icd -p IDEasy -r <repository-name>

The value after -r is interpreted as the repository (folder) name within the selected project. The repository is resolved in the context of the selected workspace.

3. Workspace resolution behavior
   If no workspace is explicitly provided, the command should:

• First search the workspace main
• If no match is found, search all remaining workspaces
• Navigate to the first workspace (in this search order) containing the repository

4. Error handling
   If no matching repository is found in any workspace, the command should fail with a clear and informative error message, e.g:

Error: Repository '<name>' not found in any workspace.

Examples:

Example A (found in main):
icd -p IDEasy -r cli
→ navigate to /workspaces/main/IDEasy/cli

Example B (not in main, found in a next workspace)
icd -p IDEasy -r backend

Search order:
/workspaces/main/IDEasy/backend ❌
/workspaces/dev/IDEasy/backend ✅

→ navigate to /workspaces/dev/IDEasy/backend

Example C (fallback repo via project name)
icd -p IDEasy -r
→ navigate to /workspaces/main/IDEasy

Example D (repository not found anywhere)
icd -p IDEasy -r non-existing-repo

Search:
main ❌
dev ❌

Error: Repository 'non-existing-repo' not found in any workspace.

Additional context

No response