feat: add qualification thesis example

examples/qualification-thesis/utils/diagrams.typ

@@ -0,0 +1,48 @@
+#import "@preview/fletcher:0.5.8" as fletcher: diagram, edge, node
+#import fletcher.shapes: cylinder, diamond, ellipse
+
+#let default-node-stroke = 1pt
+#let default-edge-stroke = 1pt
+
+/// Read https://github.com/typst/packages/raw/main/packages/preview/fletcher/0.5.8/docs/manual.pdf for more information
+
+#let data-store(pos, text) = {
+  node(
+    pos,
+    text,
+    inset: 20pt,
+    stroke: default-node-stroke,
+  )
+}
+
+#let process(..args) = {
+  node(
+    inset: 10pt,
+    shape: ellipse,
+    stroke: default-node-stroke,
+    ..args,
+  )
+}
+
+#let dpd-edge(..args) = {
+  edge(
+    label-pos: 0.5,
+    stroke: default-edge-stroke,
+    label-anchor: "center",
+    label-fill: white,
+    corner-radius: 4pt,
+    label-size: 10pt,
+    ..args,
+    "-|>",
+  )
+}
+
+#let dpd-database(..args) = {
+  node(
+    shape: cylinder,
+    height: 6em,
+    width: 10em,
+    stroke: default-node-stroke,
+    ..args,
+  )
+}