## Description:
by using the 4MB default safeboot partition scheme layout. Tasmota will increase the FS partition with
the new Autoresize feature introduced with PR #16838#16842
So it is possible to reduce the boards mainifest since it is no more needed to have different ones for boards with different flash sizes. Added generic S3 Flash / PSRAM boards variants. Removed all S3 boards specific variants. Configuration is done via Autoconfig. For a few special use cases maybe an [env] needs to be defined. Examples for are in file `platformio_tasmota_cenv_sample.ini`
@s-hadinger @arendst @staars please test. Since it is a major change how the firmwares are build, there is maybe something i overlooked. So i do not check all below.
## Checklist:
- [x] The pull request is done against the latest development branch
- [x] Only relevant files were touched
- [ ] Only one feature/fix was added per PR and the code change compiles without warnings
- [ ] The code change is tested and works with Tasmota core ESP8266 V.2.7.4.9
- [ ] The code change is tested and works with Tasmota core ESP32 V.2.0.5
- [x] I accept the [CLA](https://github.com/arendst/Tasmota/blob/development/CONTRIBUTING.md#contributor-license-agreement-cla).
_NOTE: The code change must pass CI tests. **Your PR cannot be merged unless tests pass**_
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