oeqa: add "maturin develop" SDK test case

oeqa: add "maturin develop" SDK test case

'maturin develop' first checks that a virtual environment
has been created, which is a good test for our python3 SDK
environment ;)

Source for guessing-game lifted from https://www.maturin.rs/tutorial

The test case is expected to fetch any necessary crates, build a
development version of the crate and package it as a wheel

Needs at a minimum the following in e.g. local.conf:
TOOLCHAIN_HOST_TASK:append = " nativesdk-python3-maturin"
SDK_INCLUDE_TOOLCHAIN = '1'
SDK_TOOLCHAIN_LANGS += 'rust'

The output of 'maturin develop' should be something like:
...
🔗 Found pyo3 bindings with abi3 support for Python ≥ 3.8
🐍 Not using a specific python interpreter
📡 Using build options features from pyproject.toml
   ...
   Compiling guessing-game v0.1.0 (/path/to/guessing-game)
    Finished dev [unoptimized + debuginfo] target(s) in 7.14s
📦 Built wheel for abi3 Python ≥ 3.8 to /path/to/tmpdir/guessing_game-0.1.0-cp38-abi3-linux_x86_64.whl
🛠 Installed guessing-game-0.1.0

Signed-off-by: Tim Orling <tim.orling@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>