Make dotnet project convert interactive

[jjonescz]

And allow users to specify whether the files should be copied or moved.

Resolves #49624.

[Copilot]

Pull Request Overview

This PR makes dotnet project convert interactive by adding a --keep-source option and prompting users to confirm or specify output when not provided.

• Introduces shared InteractiveConsole helpers and an interactive option in common options.
• Adds KeepSourceOption and wires interactive logic into the parser and command implementation.
• Updates shell completions, tests, and localization/resx to cover the new interactive behavior.

Reviewed Changes

Copilot reviewed 23 out of 23 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/Cli/dotnet/InteractiveConsole.cs	New helper for interactive prompts (Confirm/Ask)
src/Cli/dotnet/CommonOptions.cs	Cache and expose a reusable --interactive option
src/Cli/dotnet/Commands/Project/Convert/ProjectConvertCommandParser.cs	Add --keep-source option
src/Cli/dotnet/Commands/Project/Convert/ProjectConvertCommand.cs	Implement interactive flow and copy/move logic for keep-source
test/dotnet.Tests/CompletionTests/snapshots/.verified.	Update zsh/bash/pwsh completion snapshots for new options
test/dotnet.Tests/CommandTests/Project/Convert/DotnetProjectConvertTests.cs	Add and update tests for --keep-source and interactive cases
src/Cli/dotnet/Commands/CliCommandStrings.resx	Add new CLI string entries for interactive prompts
src/Cli/dotnet/Commands/xlf/CliCommandStrings.*.xlf	Add localization entries for interactive prompts

Comments suppressed due to low confidence (2)

test/dotnet.Tests/CompletionTests/snapshots/zsh/DotnetCliSnapshotTests.VerifyCompletions.verified.zsh:678

• Zsh completion suggests capitalized False/True, but the CLI expects lowercase false/true. Update to suggest lowercase values to match actual accepted arguments.

                                            '--keep-source=[Whether to keep source files intact (otherwise, they are deleted after conversion).]: :((False\:"False" True\:"True" ))' \

test/dotnet.Tests/CompletionTests/snapshots/bash/DotnetCliSnapshotTests.VerifyCompletions.verified.sh:1190

• Bash completion suggests False/True but the --keep-source option expects lowercase false/true, so the suggestions should be updated accordingly.

            COMPREPLY=( $(compgen -W "False True" -- "$cur") )

[RikkiGibson]

Amazing, I was genuinely going to ask for this but thought.. "it's the wrong point in the dev cycle..it's out of left field..etc." Then suddenly here it is.