Scarlet Bandana Layout Additions (#20882)

* add matrix_diagram.md

* info.json: apply friendly formatting

* info.json: correct layout data

* rename LAYOUT_all to LAYOUT_65_xt_ansi_split_space_split_bs

* add LAYOUT_65_xt_ansi_split_space

* add LAYOUT_65_xt_ansi_split_bs

* add LAYOUT_65_xt_ansi

* update readme.md

- convert metadata section to list
- update Availability link (mark as "no longer available" as the vendor no longer ships)
- add Flashing and Bootloader instructions

keyboards/woodkeys/scarletbandana/matrix_diagram.md

@@ -0,0 +1,21 @@
+# Matrix Diagram for WoodKeys.click Scarlet Bandana Version IV Mark 2
+
+```
+                                                              ┌───────┐
+                                                 2u Backspace │0F     │
+                                                              └───────┘
+┌───┬───┐ ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
+│00 │01 │ │02 │03 │04 │05 │06 │07 │08 │09 │0A │0B │0C │0D │0E │0F │2F │0G │
+├───┼───┤ ├───┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴───┼───┤
+│10 │11 │ │12   │13 │14 │15 │16 │17 │18 │19 │1A │1B │1C │1D │1E │1F   │1G │
+├───┼───┤ ├─────┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴─────┼───┤
+│20 │21 │ │22    │23 │24 │25 │26 │27 │28 │29 │2A │2B │2C │2D │2E      │2G │
+├───┼───┤ ├──────┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴────┬───┼───┤
+│30 │31 │ │32      │33 │34 │35 │36 │37 │38 │39 │3A │3B │3C │3E    │3F │3G │
+├───┼───┤ ├────┬───┴┬──┴─┬─┴───┴─┬─┴───┴──┬┴───┴──┬┴──┬┴──┬┴──┬───┼───┼───┤
+│40 │41 │ │42  │43  │44  │45     │47      │49     │4A │4B │4C │4E │4F │4G │
+└───┴───┘ └────┴────┴────┴───────┴────────┴───────┴───┴───┴───┴───┴───┴───┘
+          ┌────┬────┬────┬────────────────────────┬───┬───┬───┐
+          │42  │43  │44  │47                      │4A │4B │4C │ Standard
+          └────┴────┴────┴────────────────────────┴───┴───┴───┘
+```