Add: Seeed Studio MR60BHA2 mmWave Sensor (#7589)

Co-authored-by: Spencer Yan <spencer@spenyan.com>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

tests/components/seeed_mr60bha2/common.yaml

@@ -0,0 +1,19 @@
+uart:
+  - id: seeed_mr60fda2_uart
+    tx_pin: ${uart_tx_pin}
+    rx_pin: ${uart_rx_pin}
+    baud_rate: 115200
+    parity: NONE
+    stop_bits: 1
+
+seeed_mr60bha2:
+  id: my_seeed_mr60bha2
+
+sensor:
+  - platform: seeed_mr60bha2
+    breath_rate:
+      name: "Real-time respiratory rate"
+    heart_rate:
+      name: "Real-time heart rate"
+    distance:
+      name: "Distance to detection object"