doc: release-notes-3.7: Improve release highlights section

Major enhancements with this release include:

* A new, completely overhauled hardware model has been introduced. This change the way both SoCs and

  boards are named, defined and constructed in Zephyr.

* A new, completely :ref:`overhauled hardware model <hw_model_v2>` has been introduced.

  It changes the way both SoCs and boards are named, defined and constructed in Zephyr.

  Additional information can be found in the :ref:`board_porting_guide`.

* A long-awaited HTTP server library, and associated service API, allow to easily implement HTTP/1.1

  and HTTP/2 servers in Zephyr. Resources can be registered statically or at runtime, and WebSocket

  support is included.

* POSIX support has been extended, with most Options of the IEEE 1003-2017

* A long-awaited :ref:`HTTP Server <http_server_interface>` library, and associated service API,

  allow to easily implement HTTP/1.1 and HTTP/2 servers in Zephyr. Resources can be registered

  statically or dynamically, and WebSocket support is included.

* :ref:`POSIX support <posix_support>` has been extended, with most Options of the IEEE 1003-2017

  :ref:`System Interfaces <posix_system_interfaces_required>` receiving support, as well as most

  Options and Option groups required for :ref:`PSE51 <posix_aep_pse51>`,

  :ref:`PSE52 <posix_aep_pse52>`, and :ref:`PSE53 <posix_aep_pse53>`.

* Bluetooth Host has been extended with support for the Nordic UART Service (NUS), Hands-free Audio

  Gateway (AG), Advanced Audio Distribution Profile (A2DP), and Audio/Video Distribution Transport

  Protocol (AVDTP).

* Sensor abstraction model has been overhauled to adopt a read-then-decode approach that enables

  more types of sensors and data flows than the previous fetch/get APIs.

* A new LLEXT Extension Development Kit (EDK) makes it easier to develop and integrate custom

  extensions into Zephyr, including outside of the Zephyr tree.

* Native simulator now supports leveraging native host networking stack without having to rely on

  complex setup of the host environment.

* Sensor abstraction model has been overhauled to adopt a

  :ref:`read-then-decode approach <sensor-read-and-decode>` that enables more types of sensors and

  data flows than the previous fetch/get APIs.

* A new :ref:`LLEXT Extension Developer Kit (EDK) <llext_build_edk>` makes it easier to develop and

  integrate custom extensions into Zephyr, including outside of the Zephyr tree.

* :ref:`Native simulator <native_sim>` now supports leveraging native host networking stack without

  having to rely on complex setup of the host environment.

* Trusted Firmware-M (TF-M) 2.1.0 and Mbed TLS 3.6.0 have been integrated into Zephyr.

  Both of these versions are LTS releases.

  Both of these versions are LTS releases. What's more, :ref:`psa_crypto` has been adopted as a replacement

  for TinyCrypt and provides enhanced security and performance.

* A new experimental implementation of the :ref:`Precision Time Protocol <ptp_interface>` (PTP, IEEE

  1588) allows to synchronize time across devices with sub-microsecond accuracy.

* New documentation pages have been introduced to help developers setup their local development

  environment with Visual Studio Code and CLion.

  environment for :ref:`vscode_ide` and :ref:`clion_ide`.

An overview of the changes required or recommended when migrating your application from Zephyr

v3.6.0 to Zephyr v3.7.0 can be found in the separate :ref:`migration guide<migration_3.7>`.