{CONTRIBUTING,FUNDING}.md: add content

CONTRIBUTING.md

@@ -0,0 +1,10 @@
+Contributions are welcomed assuming my repositories are the correct place
+for it (the target is my repository or a PR I have open to another repository).
+
+Issues being assigned to me doesn't matter, I use that just as a tool for
+rediscovering them easily, http://github.com/issues?q=is:open%20assignee:Mikaela
+
+I also accept PRs to repositories that are mirrors (if that is easier for you
+than opening at the original location) as patches are easy enough to export
+from GitHub or `git remote`s to use, the merge might just take a bit longer
+(including the time the mirror takes to update).

FUNDING.yml

@@ -0,0 +1 @@
+custom: ["https://github.com/Mikaela/.github/issues/2"]