wip: Porting of docs to docusaurus (#7208)

This ports the docs for the following designs: breanna, bruce, cathrin, florence, florent , hugo, lily, lunetius, onyx, opal, paco, sandy, shelly, shin, sven, tamiko, teagan, iberius, trayvon, wahid, walburga, and yuri.

Also adds a prebuild step to build the options umbrella pages. and includes some CSS tweaks.

sites/orgdocs/docs/about/site/draft/readme.mdx

@@ -109,7 +109,7 @@ what design you are generating a pattern for.
 
 The following core settings are available:
 
-### Pattern Details
+### Pattern Details {#complete}
 
 This setting -- which is enabled by default -- will give you a pattern with all
 details included.
@@ -117,7 +117,7 @@ details included.
 If you disable it, you will instead get a pattern that does not include any
 details such as text or annotations, and only include the seamlines.
 
-### Pattern expansion
+### Pattern expansion {#expand}
 
 This option suppresses all efforts to make the pattern consume less
 space/paper.
@@ -130,7 +130,7 @@ This option -- which is disabled by default -- allows you to suppress the space
 saving and indicate you rather want to get full-sized views on all pattern
 parts.
 
-### Margin
+### Margin {#margin}
 
 The margin setting controls how much space will be added around each pattern
 part when calculating the pattern layout.
@@ -138,7 +138,7 @@ part when calculating the pattern layout.
 Each pattern part is laid out as a rectangle on the page. The spacing around
 (and between) these rectangles is controlled by this setting.
 
-### Included Parts
+### Included Parts {#include}
 
 This setting allows you to specify which patterns parts you want to generate.
 
@@ -149,7 +149,7 @@ style.
 It can also be used to include pattern parts that -- for whatever reason -- are
 hidden by default.
 
-### Paperless Patterns
+### Paperless Patterns {#paperless}
 
 The paperless setting lets you generate a sewing pattern that includes extra
 dimensions as well as a grid (in either metric or imperial, based on your
@@ -159,7 +159,7 @@ This allows you to skip printing the pattern altogether. Instead you can
 transfer it directly onto the fabric, or an intermediate medium such as pattern
 paper.
 
-### Render Engine
+### Render Engine {#renderer}
 
 This setting allows you to choose how your pattern will be rendered. In other
 words, how it will be drawn on the screen. There are two options:
@@ -183,7 +183,7 @@ allowance, you should enable it by changing this option to **Yes**.
 
 :::note
 FreeSewing's core library only takes a single setting to handle seam allowance:
-`sa`.  However, for convenience, we've split this up into two different
+`sa`. However, for convenience, we've split this up into two different
 settings on the website:
 
 - **[Include Seam Allowance](/docs/about/site/draft#sabool)**: Controls whether
@@ -203,7 +203,7 @@ of this size.
 
 :::note
 FreeSewing's core library only takes a single setting to handle seam allowance:
-`sa`.  However, for convenience, we've split this up into two different
+`sa`. However, for convenience, we've split this up into two different
 settings on the website:
 
 - **[Include Seam Allowance](#sabool)**:
@@ -214,18 +214,18 @@ settings on the website:
 The latter will only be shown if you've enabled the former.
 :::
 
-### Scale
+### Scale {#scale}
 
 The scale settings allow you to scale those parts of a pattern that do not
-scale with measurements.  Things like logos, line widths, font sizes, and so
+scale with measurements. Things like logos, line widths, font sizes, and so
 on.
 
 This setting was added at the requests of people who like to use our patterns
-to make doll clothes.  When generating such a small pattern, the arrowheads,
-titles, and so on tend to obscure much of the pattern.  This setting allows you
+to make doll clothes. When generating such a small pattern, the arrowheads,
+titles, and so on tend to obscure much of the pattern. This setting allows you
 to scale them down or -- if you so wish -- scale them up.
 
-### Units
+### Units {#units}
 
 This controls the units used on your pattern. FreeSewing supports both metric
 and imperial units.