…pes (python-kasa#1781)

Use get() instead of index accessor to avoid crashing on unknown devices.

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Co-authored-by: GhostCoder6969 <ghostcoder6969@gmail.com>

Fixture for a Tapo P116M (India), hardware 1.0, firmware 1.4.4.
It has the same energy monitoring components as the P110M.

Adds a device fixture for the **Tapo TD21** doorbell, hardware 2.0 (EU),
firmware 1.1.5 Build 260423 Rel.6435n.

The fixture's `discovery_result` block is **hand-written**, not
captured.


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Co-authored-by: Smugaski <Smugaski@users.noreply.github.com>

Use the real discovery reply in the TD21 fixture. I said there that the TD21 doesn't answer UDP
discovery, and that was wrong: it was asleep during my first attempt,
and I had skipped discovery in `dump_devinfo` by passing the family
flags. The doorbell does answer, from port 20004.

This commit uses the real device response for the fixture, so the `_comment` marker is removed since
nothing in the fixture is hand-made any more. 


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Co-authored-by: Smugaski <Smugaski@users.noreply.github.com>

- Add `kasa/transports/sslcontext.py` with one shared SSL context for
the https transports to avoid copies across transports.
- Use it in `SslTransport`, and convert KLAP and Linkie also to use it.
- Extend Python's default ciphers with the legacy suites instead of
replacing accepted ciphers for future compatibility.

…#1802)

Smartcam devices do not support sending individual requests, but respond always with `PROTOCOL_FORMAT_ERROR
(-40210)`.

This commit forces them to always use the multi-request format for requests even after receiving an error where we would otherwise fallback to individual requests.