chore: add C code linting & formatting

Makefile

@@ -70,22 +70,42 @@ man: vieter
 
 
 # =====OTHER=====
+# Linting
 .PHONY: lint
-lint:
+lint: lint-v lint-c
+
+.PHONY: lint-v
+lint-v:
 	$(V) fmt -verify $(SRC_DIR)
 	$(V) vet -W $(SRC_DIR)
 	$(V_PATH) missdoc -p $(SRC_DIR)
 	@ [ $$($(V_PATH) missdoc -p $(SRC_DIR) | wc -l) = 0 ]
 
-# Format the V codebase
+.PHONY: lint-c
+lint-c:
+	clang-format --Werror -n $(SRCS_C) $(SRCS_H)
+
+
+# Formatting
 .PHONY: fmt
-fmt:
+fmt: fmt-v fmt-c
+
+.PHONY: fmt-v
+fmt-v:
 	$(V) fmt -w $(SRC_DIR)
 
+.PHONY: fmt-c
+fmt-c:
+	clang-format -i $(SRCS_C) $(SRCS_H)
+
+
+# Testing
 .PHONY: test
 test:
 	$(V) -g test $(SRC_DIR)
 
+
+# Cleaning
 .PHONY: clean
 clean:
 	rm -rf 'data' 'vieter' 'dvieter' 'pvieter' 'vieter.c' 'pkg' 'src/vieter' *.pkg.tar.zst 'suvieter' 'afvieter' '$(SRC_DIR)/_docs' 'docs/public'