Add project funding and support information

- Add FUNDING.yml with PayPal (BreezyOps) and GitHub Sponsors options
- Add 'Support This Project' section to README with funding links

Author: danielrobbins

.github/FUNDING.yml

@@ -0,0 +1,4 @@
+# These are supported funding model platforms
+
+github: danielrobbins
+custom: ["https://paypal.me/breezyops"]

README.md

@@ -53,6 +53,18 @@ set show-all-if-ambiguous on
 ```
 Then restart your shell or run `bind -f ~/.inputrc`.
 
+Support This Project
+====================
+
+Keychain is maintained by [BreezyOps](https://breezyops.com) -
+Daniel Robbins' Open Source Innovation Lab. If you find it useful, please consider:
+
+- Starring the repository ⭐
+- Joining [Discussions](https://github.com/danielrobbins/keychain/discussions) to share tips and ask questions 💬
+- [Supporting development](https://paypal.me/breezyops) to help maintain and improve keychain! ❤️
+
+Your support helps keep this project alive and actively maintained, and supports the creation of future projects. Thank you!
+
 IMPORTANT - GitHub Contributors
 ===============================