Clean up vsce package contents (#23718)

Partially addresses:
microsoft#23694

Author: karthiknadig

.vscodeignore

@@ -4,9 +4,11 @@
 .editorconfig
 .env
 .eslintrc
+.eslintignore
 .gitattributes
 .gitignore
 .gitmodules
+.git*
 .npmrc
 .nvmrc
 .nycrc
@@ -21,7 +23,9 @@ test.ipynb
 tsconfig*.json
 tsfmt.json
 vscode-python-signing.*
+noxfile.py
 
+.config/**
 .github/**
 .mocha-reporter/**
 .nvm/**
@@ -67,8 +71,17 @@ test/**
 tmp/**
 typings/**
 types/**
+**/__pycache__/**
+**/.devcontainer/**
+
+python-env-tools/.gitignore
+python-env-tools/bin/.gitignore
 python-env-tools/.github/**
 python-env-tools/.vscode/**
 python-env-tools/crates/**
 python-env-tools/target/**
 python-env-tools/Cargo.*
+python-env-tools/.cargo/**
+
+python-env-tools/**/*.md
+pythonExtensionApi/**