doc: release: Add sensor release notes for v2.7.0
doc: release: Add sensor release notes for v2.7.0

Documents significant changes to sensor drivers in the v2.7.0 release,
including new drivers added and existing drivers modified.

Signed-off-by: Maureen Helm <87a696db5547fa477bda9f9e0f00013c839c14d3@intel.com>

zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr