Build PyPI Package: near-cli-py - Python CLI for NEAR

Description

## Overview
Create a Python-based CLI for NEAR operations, for developers who prefer Python tooling over the Node.js CLI.

## Why This Matters
Python developers want Python tools. A native Python CLI fits their workflow better.

## Technical Requirements

### CLI Commands
```bash
# Python-native NEAR CLI
near-py account view alice.near
near-py tx send bob.near 10
near-py contract deploy mycontract.wasm
near-py contract call token.near transfer '{"to":"bob.near"}'
```

## Deliverables
1. **Python CLI package**
2. **All common operations**
3. **Config management**
4. **Documentation**

## Budget: 8 NEAR