feat: add mermaid

content/docs/prologue/quick-start.md

@@ -13,6 +13,94 @@ weight: 110
 toc: true
 ---
 
+## Flow
+
+{{< mermaid class="bg-light text-center">}}
+graph TD
+  A[Hard] -->|Text| B(Round)
+  B --> C{Decision}
+  C -->|One| D[Result 1]
+  C -->|Two| E[Result 2]
+{{< /mermaid >}}
+
+## Sequence
+
+{{< mermaid >}}
+sequenceDiagram
+  Alice->>John: Hello John, how are you?
+  loop Healthcheck
+      John->>John: Fight against hypochondria
+  end
+  Note right of John: Rational thoughts!
+  John-->>Alice: Great!
+  John->>Bob: How about you?
+  Bob-->>John: Jolly good!
+{{< /mermaid >}}
+
+## Gantt
+
+{{< mermaid >}}
+gantt
+  section Section
+  Completed :done,    des1, 2014-01-06,2014-01-08
+  Active        :active,  des2, 2014-01-07, 3d
+  Parallel 1   :         des3, after des1, 1d
+  Parallel 2   :         des4, after des1, 1d
+  Parallel 3   :         des5, after des3, 1d
+  Parallel 4   :         des6, after des4, 1d
+{{< /mermaid >}}
+
+## Class
+
+{{< mermaid >}}
+classDiagram
+  classA --|> classB : Inheritance
+  classC --* classD : Composition
+  classE --o classF : Aggregation
+  classG --> classH : Association
+  classI -- classJ : Link(Solid)
+  classK ..> classL : Dependency
+  classM ..|> classN : Realization
+  classO .. classP : Link(Dashed)
+{{< /mermaid >}}
+
+## State
+
+{{< mermaid >}}
+stateDiagram-v2
+  [*] --> Still
+  Still --> [*]
+  Still --> Moving
+  Moving --> Still
+  Moving --> Crash
+  Crash --> [*]
+{{< /mermaid >}}
+
+## Pie
+
+{{< mermaid >}}
+pie
+  title Key elements in Product X
+  "Calcium" : 42.96
+  "Potassium" : 50.05
+  "Magnesium" : 10.01
+  "Iron" :  5
+{{< /mermaid >}}
+
+## User Journey
+
+{{< mermaid >}}
+journey
+  title My working day
+  section Go to work
+    Make tea: 5: Me
+    Go upstairs: 3: Me
+    Do work: 1: Me, Cat
+  section Go home
+    Go downstairs: 5: Me
+    Sit down: 3: Me
+{{< /mermaid >}}
+
 ## Requirements
 
 Doks uses npm to centralize dependency management, making it [easy to update]({{< relref "how-to-update" >}}) resources, build tooling, plugins, and build scripts: