update: Add heatmap-calendar for journaling

.obsidian/plugins/heatmap-calendar/manifest.json

@@ -0,0 +1,10 @@
+{
+	"id": "heatmap-calendar",
+	"name": "Heatmap Calendar",
+	"version": "0.6.0",
+	"minAppVersion": "0.12.0",
+	"description": "Activity Year Overview for DataviewJS, Github style – Track Goals, Progress, Habits, Tasks, Exercise, Finances, \"Dont Break the Chain\" etc.",
+	"author": "Richard Slettevoll",
+	"authorUrl": "https://richard.sl",
+	"isDesktopOnly": false
+}