feat: add archetypes (#145)

archetypes/categories.md

@@ -0,0 +1,7 @@
+---
+title: "{{ replace .Name "-" " " | title }}"
+image: 
+style:
+    background: "#2a9d8f"
+    color: "#fff"
+---

archetypes/default.md

@@ -1,2 +1,11 @@
-+++
-+++
+---
+title: "{{ replace .Name "-" " " | title }}"
+description: 
+date: {{ .Date }}
+image: 
+math: 
+license: 
+hidden: false
+comments: true
+draft: true
+---

archetypes/tags.md

@@ -0,0 +1,5 @@
+---
+title: "{{ replace .Name "-" " " | title }}"
+description: 
+image: 
+---