doc: release: Add 2.5.0 release notes draft

Adds skeleton release notes for the next release.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>

doc/releases/release-notes-2.5.rst

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+:orphan:
+
+.. _zephyr_2.5:
+
+Zephyr 2.5.0 (Working Draft)
+############################
+
+We are pleased to announce the release of Zephyr RTOS version 2.5.0.
+
+Major enhancements with this release include:
+
+The following sections provide detailed lists of changes by component.
+
+Security Vulnerability Related
+******************************
+
+The following CVEs are addressed by this release:
+
+More detailed information can be found in:
+https://docs.zephyrproject.org/latest/security/vulnerabilities.html
+
+Known issues
+************
+
+You can check all currently known issues by listing them using the GitHub
+interface and listing all issues with the `bug label
+<https://github.com/zephyrproject-rtos/zephyr/issues?q=is%3Aissue+is%3Aopen+label%3Abug>`_.
+
+API Changes
+***********
+
+Deprecated in this release
+==========================
+
+Removed APIs in this release
+============================
+
+Stable API changes in this release
+==================================
+
+Kernel
+******
+
+Architectures
+*************
+
+* ARC
+
+* ARM
+
+  * AARCH32
+
+  * AARCH64
+
+* POSIX
+
+* RISC-V
+
+* x86
+
+Boards & SoC Support
+********************
+
+* Added support for these SoC series:
+
+* Made these changes in other SoC series:
+
+* Changes for ARC boards:
+
+* Added support for these ARM boards:
+
+* Made these changes in other boards:
+
+* Added support for these following shields:
+
+Drivers and Sensors
+*******************
+
+* ADC
+
+* Audio
+
+* Bluetooth
+
+* CAN
+
+* Clock Control
+
+* Console
+
+* Counter
+
+* Crypto
+
+* DAC
+
+* Debug
+
+* Display
+
+* DMA
+
+* EEPROM
+
+* Entropy
+
+* ESPI
+
+* Ethernet
+
+* Flash
+
+* GPIO
+
+* Hardware Info
+
+* I2C
+
+* I2S
+
+* IEEE 802.15.4
+
+* Interrupt Controller
+
+* IPM
+
+* Keyboard Scan
+
+* LED
+
+* LED Strip
+
+* LoRa
+
+* Modem
+
+* PECI
+
+* Pinmux
+
+* PS/2
+
+* PWM
+
+* Sensor
+
+* Serial
+
+* SPI
+
+* Timer
+
+* USB
+
+* Video
+
+* Watchdog
+
+* WiFi
+
+Networking
+**********
+
+Bluetooth
+*********
+
+* Host
+
+* Mesh
+
+* BLE split software Controller
+
+* HCI Driver
+
+Build and Infrastructure
+************************
+
+* Improved support for additional toolchains:
+
+* Devicetree
+
+Libraries / Subsystems
+**********************
+
+* Disk
+
+* Management
+
+  * MCUmgr
+
+  * updatehub
+
+* Settings
+
+* Random
+
+* POSIX subsystem
+
+* Power management
+
+* Logging
+
+* LVGL
+
+* Shell
+
+* Storage
+
+* Tracing
+
+* Debug
+
+HALs
+****
+
+* HALs are now moved out of the main tree as external modules and reside in
+  their own standalone repositories.
+
+Documentation
+*************
+
+Tests and Samples
+*****************
+
+Issue Related Items
+*******************
+
+These GitHub issues were addressed since the previous 2.4.0 tagged
+release: