repo: make typst compilation more generic

docs/compiled/.gitkeep

@@ -0,0 +1 @@
+the just script will place compiled pdfs in here. thank you for your understanding.

justfile

@@ -1,2 +1,5 @@
-doc-design:
+docs:
-	typst compile docs/design/*.typ --root=docs
+	for doc in $(fd '.typ' './docs' --exclude 'template*' --exclude 'util*'); do \
+		typst compile $doc --root=docs; \
+		mv "$(dirname $doc)/$(basename $doc .typ).pdf" docs/compiled/; \
+	done