Excludes cache files from vscode explorer (#1131)

Small quality of life change that excludes cache files from VSCode File
Explorer when attached to sim container.

.vscode/tools/settings.template.json

 {
+    "files.exclude": {
+        "**/.mypy_cache": true,
+        "**/__pycache__": true,
+        "**/*.egg-info": true
+    },
     "files.associations": {
         "*.tpp": "cpp",
         "*.kit": "toml",