Add inter font

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

Makefile

@@ -1,10 +1,25 @@
-.PHONY: all css js reset-submodules
+.PHONY: all css js font update-inter reset-submodules
 
-all: css js reset-submodules
+all: css js font reset-submodules
 
 css:
 
 js:
 
+font:
+
+update-inter:
+	@tmp_zip=$$(mktemp) && \
+	tmp_dir=$$(mktemp -d) && \
+	curl -s https://api.github.com/repos/rsms/inter/releases/latest \
+	| grep "browser_download_url.*zip" \
+	| cut -d '"' -f 4 \
+	| xargs curl -Ls -o $$tmp_zip && \
+	unzip -q -o $$tmp_zip "web/*" -d $$tmp_dir && \
+	rm -rf static/font/inter && \
+	mkdir -p static/font/inter && \
+	cp -r $$tmp_dir/web/{InterVariable*.woff2,Inter-*.woff2} static/font/inter && \
+	rm -rf $$tmp_zip $$tmp_dir
+
 reset-submodules:
 	git submodule foreach --recursive 'git reset --hard'