feat(datasheet): add typst datasheet flow

This is a squash of 5 commits in order to add the new datasheet flow.

fix(datasheet): ensure datasheet can use images properly

fix(datasheet): white page when funding was not specified

This was caused by creating a page before first checking whether there was any content for that page beforehand, so it would result in a rogue white page with no content.

fix(datasheet): missing analog pin tables

fix(datasheet): tweak pandoc settings

Switching from `gfm` to `markdown` should enable more formatting options. The extensions have been configured to be similar to `gfm` but provide some additional things, like `line_blocks` and `lists_without_preceding_blankline`s.

config.py

@@ -1,4 +1,27 @@
-from typing import TypedDict
+from typing import List, Literal, TypedDict
+
+from tech import TechName
+
+
+class ArtworkEntryType(TypedDict):
+    """TypedDict for artwork, used by `config.DatasheetConfig`"""
+
+    id: str
+    rotate: str
+
+
+class DatasheetConfig(TypedDict):
+    """TypedDict for the datasheet config within Tiny Tapeout's config.yaml file"""
+
+    pinout: Literal["caravel", "openframe"]
+    theme_override_colour: str
+    show_chip_viewer: bool
+    link_disable_colour: bool
+    link_override_colour: str
+    qrcode_follows_theme: bool
+    include: List[str]
+    disabled: List[str]
+    artwork: List[ArtworkEntryType]
 
 
 class Config(TypedDict):
@@ -11,3 +34,5 @@ class Config(TypedDict):
     top_level_macro: str
     powered_netlists: bool
     no_power_gating: bool
+    pdk: TechName
+    datasheet_config: DatasheetConfig