add FUNDING.md (#1317)

FUNDING.md

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+# Funding
+
+Kysely is an MIT-licensed open-source project and is completely free to use - and will remain so.
+
+Kysely is a labor of love. We do this in our free time.
+
+We do not accept donations.
+
+- Getting paid for open-source won't make us put more time and effort into open-source.
+  We have family, friends, and other hobbies and interests.
+
+- We work in the tech industry, full-time, as software developers. We are comfortable as-is.
+
+- We don't believe in freelance open-source as a stable source of income for the long term.
+  We have mouths to feed, and careers to maintain.
+
+- Sponsored projects tend to be affected by big sponsors. We want to keep Kysely away
+  from companies' and VCs' opinions and business needs.
+
+- Kysely is escapism for us. We don't want it to feel like another job.
+
+
+Instead of donating to us, we encourage you to support meaningful causes or other open-source projects in need of funding.
+
+Thank you for supporting Kysely through your usage, contributions, and feedback.