feat(chat): Add executeBash tool for Amazon Q Agentic Chat

[tsmithsz]

Problem

Amazon Q Agentic Chat needs the ability to execute bash commands

Solution

Testing

ExecuteBash Tool
extensionHostProcess.js:178
    ✔ pass validation for a safe command (read-only)
extensionHostProcess.js:178
    ✔ fail validation if the command is empty
extensionHostProcess.js:178
    ✔ set requiresAcceptance=true if the command has dangerous patterns
extensionHostProcess.js:178
    ✔ set requiresAcceptance=false if it is a read-only command
extensionHostProcess.js:178
    ✔ whichCommand cannot find the first arg
extensionHostProcess.js:178
    ✔ whichCommand sees first arg on PATH
extensionHostProcess.js:178
    ✔ stub invoke() call
extensionHostProcess.js:178
  7 passing (45ms)

---

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[github-actions]

• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
  • Note: beta or "experiment" features that have active users should announce fixes in the changelog.
  • If this is not a feature or fix, use an appropriate type from the title guidelines. For example, telemetry-only changes should use the telemetry type.

[tsmithsz]

/retrybuilds

[justinmk3]

Parsing bash/shell commands is non-trivial. Is this intended to support arbitrary bash command, or only very simple cases?

[justinmk3]

Here's an example: #7230