chore: add files from master-wiki repo

_master_wiki/notes/free time.md

@@ -0,0 +1,17 @@
+```mermaid
+flowchart TB
+
+A([Free time]) --> B{Energy level?}
+
+B-- Low --> C{Mentally fatigue?}
+B-- Middle --> D{Want to be productive?}
+B-- High ---> E(["`Work on _doing_ of some project`"])
+
+C-- Yes --> G([Watch something])
+C-- No --> F([Read])
+C-- A little --> H
+
+D-- No -->H([Play])
+D-- Yes -->I([Update docs])
+D-- Yes -->J(["ˋTackle _read later_ˋ"])
+```