Feature: add text measurement_type

[afarago]

Add text type for object id 0x53 after documented and released as a text_sensor.
reference Bluetooth-Devices/bthome-ble#74

Example
\x44\x53\x0C\x48\x65\x6C\x6C\x6F\x20\x57\x6F\x72\x6C\x64\x21

\x44 = BTHome Device Information
\x53 = Object id for a text sensor
\x0C = Length of the text (12 characters)
\x48\x65\x6C\x6C\x6F\x20\x57\x6F\x72\x6C\x64\x21 = Text Hello World!