WIP: make I2S bridge compile with Core 3, untested on hardware

[Staars]

Description:

Migration process, needs more work.

Needs build flag: USE_I2S_BRIDGE in addition to e.g. USE_I2S_ALL

Checklist:

• [x] The pull request is done against the latest development branch
• [x] Only relevant files were touched
• [x] Only one feature/fix was added per PR and the code change compiles without warnings
• [x] The code change is tested and works with Tasmota core ESP8266 V.2.7.6
• [x] The code change is tested and works with Tasmota core ESP32 V.3.0.0
• [x] I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass

[Staars]

Dry test on ESP32-S3 works as it responds to i2sbridge commands as expected, but real functionality is unknown.