Update tmag5273 link to active maintained driver

The previous link (https://github.com/dysonltd/tmag5273) returns 404 —
the repository has been deleted or made private. Replace with the
actively maintained crates.io-published driver:

  https://github.com/coffiot/tmag5273-rs
  https://crates.io/crates/tmag5273

Also updates the description to mention the hardware CORDIC angle
engine and typestate API, and adds the standard crates.io version
badge to match neighboring entries.

Author: daniil4udo

README.md

@@ -1170,7 +1170,7 @@ Work in progress drivers. Help the authors make these crates awesome!
 1. [ublox-cellular-rs] - Serial - Cellular driver for the full Ublox cellular serial based family
 1. [atwinc1500-rs] - SPI - A host driver for the Atwinc1500 network controller
 1. [HX711] - GPIO - An interrupt-based driver for the HX711 Load Cell Amplifier IC. no-std.
-1. [tmag5273] - Cross-platform no_std compatible i2c library for 3-axis Hall Effect sensor.
+1. [tmag5273] - I2C - TI TMAG5273 3-axis Hall-effect sensor with hardware CORDIC angle engine and typestate API - [![crates.io](https://img.shields.io/crates/v/tmag5273.svg)](https://crates.io/crates/tmag5273)
 1. [paa5100je-pwm3901] - Cross platform no-std compatible spi async library for an Optical Flow Sensor.
 
 [AD9850]: https://crates.io/crates/ad9850
@@ -1276,7 +1276,7 @@ Work in progress drivers. Help the authors make these crates awesome!
 [ublox-cellular-rs]: https://github.com/BlackbirdHQ/ublox-cellular-rs
 [atwinc1500-rs]: https://crates.io/crates/atwinc1500
 [HX711]: https://github.com/DaneSlattery/hx711
-[tmag5273]: https://github.com/dysonltd/tmag5273
+[tmag5273]: https://github.com/coffiot/tmag5273-rs
 [paa5100je-pwm3901]: https://github.com/dysonltd/paa5100je-pwm3901
 
 ## no-std crates