docs: fix block renders and method titles

[SirEdvin]

Summary

• render isometric SVG previews from all 16x16 texels on each block face
• avoid distorted embedded raster transforms
• format method titles as Lua call shapes such as digitize(slot) and getConfiguration()
• retain literal mode values in overloaded method titles so their anchors remain distinct

Testing

• ./gradlew :typed-peripheral-digitalitems:compileTypeScript :typed-peripheral-digitalitems:generateDocs --no-daemon
• node --test .github/scripts/docs-site.test.mjs projects/typed-peripheral-digitalitems/documentation/generate-docs.test.mjs
• ./gradlew build --no-daemon