feat(esp-tls): Update headers for improved wolfssl support (IDFGH-16562)

[gojimmypi]

Description

This is the fourth in a series of pull requests to improve wolfSSL integration with the ESP-IDF as proposed in #16145

As there are multiple changes there, it was suggested that I break the update into smaller pieces.

This PR updates the requirements for wolfSSL in the components/esp-tls/private_include/esp_tls_private.h and components/esp-tls/private_include/esp_tls_wolfssl.h

Related

See:

• Add wolfSSL esp-tls and Certificate Bundle Support wolfSSL/wolfssl#7936
• feat(esp-tls): Improve esp-tls-crypto for wolfssl (IDFGH-16535) #17658
• change(esp-tls): Improve support for wolfssl (IDFGH-15505) #16145
• Improving wolfSSL integration with the Espressif ESP-IDF (IDFGH-13019) #13966
• Improving wolfSSL integration with the Espressif ESP-IDF wolfSSL/wolfssl#7640
• ESP32 Espressif Improvements - Roadmap Summary wolfSSL/wolfssl#6234

Testing

The fully-implemented update is on my wolfssl-dev branch. I've been testing with this esp_http_client_example.

See also the published wolfSSL Managed component that already includes the Certificate Bundle feature introduced in wolfSSL/wolfssl#7936

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Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• Documentation is updated as needed.
• Tests are updated or added as necessary.
• Code is well-commented, especially in complex areas.
• Git history is clean — commits are squashed to the minimum necessary.

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Note

Adds wolfSSL-specific includes (incl. cert bundle), introduces optional wolfSSL config/sync fields, and updates wolfSSL API signatures (net init, server session delete).

• ESP-TLS (wolfSSL):
  • Add includes: wolfssl/openssl/x509.h, wolfssl/wolfcrypt/port/Espressif/esp_crt_bundle.h, and private_include/esp_tls_wolfssl.h.
  • Conditionally add wolfssl_ssl_config conf and void (*sync)(esp_tls*) to struct esp_tls when !WOLFSSL_NO_CONF_COMPATIBILITY.
• wolfSSL Header (esp_tls_wolfssl.h):
  • Wrap declarations with #ifdef CONFIG_ESP_TLS_USING_WOLFSSL and include wolfSSL headers (incl. x509.h).
  • Change esp_wolfssl_net_init from inline no-op to a declared function.
  • Change esp_wolfssl_server_session_delete signature from void to int.

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