ESPHome serial proxy support

[puddly]

Depends on esphome/aioesphomeapi#1495, which depends on esphome/esphome#13944.

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This PR introduces esphome:// URIs, allowing transparent connection to serial ports exposed by ESPHome devices. We already support URIs to connect to TCP serial ports via socket:// so if your application works with these, no changes will be required.

Some examples:

• esphome://my-proxy.local/?noise_psk=abcdef123456: defaults to serial port 0 and uses Noise encryption
• esphome://my-proxy.local/1?password=legacypassword: connects explicitly to serial port 1 and uses a legacy password

For CLI tools, it would look like so:

zigpy radio ezsp 'esphome://my-proxy.local/?noise_psk=abcdef123456' backup -z

[codecov]

Codecov Report

❌ Patch coverage is 95.28796% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.56%. Comparing base (c2cb10b) to head (a863a04).
⚠️ Report is 1 commits behind head on dev.

Files with missing lines	Patch %	Lines
serialx/platforms/serial_esphome.py	96.15%	7 Missing ⚠️
serialx/common.py	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev      #23      +/-   ##
==========================================
+ Coverage   84.91%   86.56%   +1.65%     
==========================================
  Files          11       12       +1     
  Lines        1352     1541     +189     
==========================================
+ Hits         1148     1334     +186     
- Misses        204      207       +3     

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