misc: added github metadata

.github/FUNDING.yml

@@ -0,0 +1,5 @@
+
+#github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+custom:
+  - https://www.buymeacoffee.com/itzg
+  - https://paypal.me/itzg

.github/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"