New SPI invert hardware SS function in hall-spi and SPI library

[UltimumControl]

This PR adds the ability to invert the logic level of the Hardware Slave Select (SS) pin for ESP32 SPI buses (HSPI/VSPI). This is critical for compatibility with hardware that expects active-high SS signals.

Backward Compatibility:
No breaking changes: Existing code using setHwCs() will default to invert_out=false (original behavior)
No Software SS Impact: Only affects hardware-controlled SS pins.
Isolation: Changes to one SPI bus (e.g., HSPI) do not affect others (e.g., VSPI).

Usage Example:
SPIClass *hspi = NULL;
setup(){
hspi = new SPIClass(HSPI);
hspi->begin();
hspi->setSSInvert(true); // Set before setHwCs();
hspi->setHwCs(true);
hspi->beginTransaction(SPISettings(SPI_CLOCK, MSBFIRST, SPI_MODE2));
}

I have tested my Pull Request on Arduino-esp32 core v3.1.3 with ESP32-S3 Board.

Related links

Some people have the same issue but with espidf. I use arduino ide so I fixed it for myself.
https://esp32.com/viewtopic.php?t=16057
https://esp32.com/viewtopic.php?t=16057

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Warnings

⚠️

Some issues found for the commit messages in this PR: the commit message "Add files via upload": summary looks empty type/action looks empty the commit message "Add files via upload": summary looks empty type/action looks empty the commit message "Update SPI.h": summary looks empty type/action looks empty Please fix these commit messages - here are some basic tips: follow Conventional Commits style correct format of commit message should be: <type/action>(<scope/component>): <summary>, for example fix(esp32): Fixed startup timeout issue allowed types are: change,ci,docs,feat,fix,refactor,remove,revert,test sufficiently descriptive message summary should be between 10 to 72 characters and start with upper case letter avoid Jira references in commit messages (unavailable/irrelevant for our customers) TIP: Install pre-commit hooks and run this check when committing (uses the Conventional Precommit Linter).

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