docs: tidelift subscription info

Author: epoberezkin

README.md

@@ -114,6 +114,11 @@ The fastest is fast-stable-stringify
 ```
 
 
+## Enterprise support
+
+fast-json-stable-stringify package is a part of [Tidelift enterprise subscription]((https://tidelift.com/subscription/pkg/npm-fast-json-stable-stringify?utm_source=npm-fast-json-stable-stringify&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers.
+
+
 # license
 
 [MIT](https://github.com/epoberezkin/fast-json-stable-stringify/blob/master/LICENSE)