B2B-48: Added public message get functions and generated local supabase conf (#1)

* B2B-48: Added public message get functions and local supabase conf

* only get the message list with the highest id

* handle case when no public list messages found

* change function name to reflect behavior more clearly

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Co-authored-by: Helena <helena@Helenas-MacBook-Pro.local>

supabase/.gitignore

@@ -0,0 +1,8 @@
+# Supabase
+.branches
+.temp
+
+# dotenvx
+.env.keys
+.env.local
+.env.*.local