feat: Flat import of markdown repo

This is a flat (without history) import of (some of) the content
from our markdown module.

We've imported this without history because the repo contains our
blog posts and showcases posts content prior to porting them to strapi.

Since this contains many images, it would balloon the size of this repo
to import the full history.

Instead, please refer to the history of the (archived) markdown repo
at: https://github.com/freesewing/markdown

markdown/org/docs/various/notation/sa/de.md

@@ -0,0 +1,11 @@
+---
+title: Nahtzugabe
+---
+
+Seam allowance is indicated by a dashed line, that has the same width and color as the seam they belong to:
+
+<Legend part="saLines" caption="Seam allowance for different fabric types" >
+
+Note that the corners of the seam allowance are trimmed, and not extended:
+
+<Legend part="sa" caption="A trimmed seam allowance corner" >

markdown/org/docs/various/notation/sa/en.md

@@ -0,0 +1,12 @@
+---
+title: Seam allowance
+---
+
+Seam allowance is indicated by a dashed line, that has the same width and color
+as the seam they belong to:
+
+<Legend part="saLines" caption="Seam allowance for different fabric types" />
+
+Note that the corners of the seam allowance are trimmed, and not extended:
+
+<Legend part="sa" caption="A trimmed seam allowance corner" />

markdown/org/docs/various/notation/sa/es.md

@@ -0,0 +1,11 @@
+---
+title: Seam allowance
+---
+
+Seam allowance is indicated by a dashed line, that has the same width and color as the seam they belong to:
+
+<Legend part="saLines" caption="Seam allowance for different fabric types" />
+
+Note that the corners of the seam allowance are trimmed, and not extended:
+
+<Legend part="sa" caption="A trimmed seam allowance corner" />

markdown/org/docs/various/notation/sa/fr.md

@@ -0,0 +1,11 @@
+---
+title: Marge de couture
+---
+
+La marge de couture est indiquée par une ligne pointillée, qui a la même largeur et la même couleur que la couture à laquelle elle appartient :
+
+<Legend part="saLines" caption="Seam allowance for different fabric types" />
+
+Notez que les coins de la marge de couture sont coupés, et non prolongés :
+
+<Legend part="sa" caption="A trimmed seam allowance corner" />

markdown/org/docs/various/notation/sa/nl.md

@@ -0,0 +1,11 @@
+---
+title: Naadtoeslag
+---
+
+Naadwaarde wordt aangegeven door een stippellijn, met dezelfde dikte en kleur als de naad die erbij hoort:
+
+<Legend part="saLines" caption="Seam allowance for different fabric types" />
+
+Merk op dat de hoeken van de naadwaarde bijgesneden zijn, en niet doorlopen:
+
+<Legend part="sa" caption="A trimmed seam allowance corner" />