Fix Windows merge command quoting and harden CLI execution (#116)

* Remove shellQuote

* Fix Windows merge command quoting and harden CLI execution

* Add unit tests

* Restructure unit tests

* Remove shellQuote references and propagate console error messages to the GUI

* Add missing file

---------

Co-authored-by: Evgueni Driouk <edriouk@arm.com>

Author: mguzmanm

docs/third-party-licenses.json

@@ -237,13 +237,6 @@
         "url": "https://github.com/isaacs/node-glob",
         "license": "https://github.com/isaacs/node-glob/blob/main/LICENSE.md"
     },
-    {
-        "name": "shell-quote",
-        "version": "1.8.3",
-        "spdx": "MIT",
-        "url": "https://github.com/ljharb/shell-quote",
-        "license": "https://github.com/ljharb/shell-quote/blob/main/LICENSE"
-    },
     {
         "name": "tmp",
         "version": "0.2.5",

package-lock.json

@@ -97,7 +97,6 @@
     "react-window": "^1.8.11",
     "sax-ts": "^1.2.13",
     "semver": "^7.7.4",
-    "shell-quote": "^1.8.3",
     "tcp-port-used": "^1.0.2",
     "tmp": "^0.2.5",
     "vscode-jsonrpc": "^8.2.1",
@@ -134,7 +133,6 @@
     "@types/react-dom": "^18.3.1",
     "@types/react-window": "^1.8.8",
     "@types/semver": "^7.7.1",
-    "@types/shell-quote": "^1.7.5",
     "@types/targz": "^1.0.5",
     "@types/tcp-port-used": "^1.0.4",
     "@types/tmp": "^0.2.6",