Python: [Samples][Python] azure_functions & durabletask READMEs need quick-install commands for prerequisites

[leestott]

Description

The azure_functions/README.md and durabletask/README.md list several external prerequisites but don't provide quick-install commands. A beginner hitting missing tools gets stuck at multiple points.

Prerequisite Status (tested on clean Windows 11)

Prerequisite	Status	Where Documented
Azure Functions Core Tools	❌ func not found	azure_functions/README.md links to install docs
Azurite storage emulator	❌ azurite not found	azure_functions/README.md links to install docs
Docker	✅ v29.4.0	durabletask/README.md mentions Docker
Azure CLI (az login)	✅	Both READMEs
uv	✅ v0.9.27	Not mentioned as prerequisite in most READMEs

Pain Points for Beginners

1. Azurite: README links to docs but a beginner won't know to run npm install -g azurite. Also unclear that it must be running before func start.
2. Azure Functions Core Tools: No version specified. Install method varies by OS.
3. Flow is non-obvious: The steps are install Azurite → start Azurite → install Core Tools → copy template → set env vars → az login → func start. Many failure points with no troubleshooting guidance.

Suggested Fix

Add a "Quick Prerequisites Checklist" section at the top of each README with exact install commands:

# Windows
winget install Microsoft.Azure.FunctionsCoreTools
npm install -g azurite

# Verify
func --version
azurite --version

Also consider adding a scripts/setup.ps1 or similar to automate prerequisite checks.

Environment

• Python 3.13.13, Windows 11, Docker 29.4.0