add(bmp581): datasheet docs for now

Author: tyeth

components/i2c/bmp581/definition.json

@@ -0,0 +1,9 @@
+{
+  "displayName": "BMP581",
+  "vendor": "Bosch",
+  "productURL": "https://www.adafruit.com/product/6407",
+  "documentationURL": "https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp581-ds004.pdf",
+  "published": false,
+  "i2cAddresses": [ "0x47", "0x46" ],
+  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude" ]
+}