Add interactive "Start with Options..." command (#354)

* Initial plan

* Add Start with Options interactive command for Dev Proxy

Co-authored-by: garrytrinder <11563347+garrytrinder@users.noreply.github.com>

* Address code review: fix title, IP validation, menu ordering

Co-authored-by: garrytrinder <11563347+garrytrinder@users.noreply.github.com>

* Remove config picker, use active config file like existing start command

Co-authored-by: garrytrinder <11563347+garrytrinder@users.noreply.github.com>

* refactor: replace sequential wizard with iterative QuickPick for start with options

Replace 12 sequential input prompts with a single iterative QuickPick menu.
Users see all options with defaults, edit only what they need, and launch
when ready.

Add config file picker with smart defaults:
- Active editor config file takes priority
- Falls back to workspace devproxyrc.json
- Otherwise uses install folder default
- Picker shows all workspace config files for override

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: garrytrinder <11563347+garrytrinder@users.noreply.github.com>
Co-authored-by: Garry Trinder <garry@trinder365.co.uk>

Author: Copilot

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added:
 
+- Command: Added `Start with Options...` to launch Dev Proxy with interactive prompts for CLI settings
 - Install: Added automated install and upgrade support for Linux using official setup scripts
 - Notification: Detect outdated Dev Proxy config files in workspace and show warning when schema versions don't match installed version
 - Command: `dev-proxy-toolkit.upgrade-configs` - Upgrade config files with Copilot Chat using Dev Proxy MCP tools

README.md

@@ -25,6 +25,7 @@ Control Dev Proxy directly from VS Code via the Command Palette (`Cmd+Shift+P` /
 | Command | When Available |
 |---------|----------------|
 | Start | Dev Proxy not running |
+| Start with Options... | Dev Proxy not running |
 | Stop | Dev Proxy running |
 | Restart | Dev Proxy running |
 | Raise mock request | Dev Proxy running |

package.json

@@ -28,6 +28,13 @@
         "icon": "$(debug-start)",
         "enablement": "!isDevProxyRunning"
       },
+      {
+        "command": "dev-proxy-toolkit.start-with-options",
+        "title": "Start with Options...",
+        "category": "Dev Proxy Toolkit",
+        "icon": "$(debug-alt)",
+        "enablement": "!isDevProxyRunning"
+      },
       {
         "command": "dev-proxy-toolkit.stop",
         "title": "Stop",
@@ -120,6 +127,11 @@
           "group": "navigation@1",
           "when": "!activeEditorIsDirty && isDevProxyConfigFile && !isDevProxyRunning"
         },
+        {
+          "command": "dev-proxy-toolkit.start-with-options",
+          "group": "navigation@2",
+          "when": "!activeEditorIsDirty && isDevProxyConfigFile && !isDevProxyRunning"
+        },
         {
           "command": "dev-proxy-toolkit.stop",
           "group": "navigation@2",