created build tooling, subtrees, and stub code for a new NGINX core module

Signed-off-by: Ava Affine <ava@sunnypup.io>

Makefile

@@ -0,0 +1,40 @@
+NGINX_SOURCE_DIR = nginx
+NGINX_BUILD_DIR = nginx/objs
+
+ifeq (, $(shell which bear))
+MUNIN_BEAR=make
+else
+MUNIN_BEAR=bear --
+endif
+
+ifeq ($(shell uname), Darwin)
+NGX_MODEXT = .dylib
+else
+NGX_MODEXT = .so
+endif
+NGX_MODULE = libmuninn$(NGX_MODEXT)
+
+ifneq ($(MUNINN_NGINX_DEBUG),)
+MUNINN_NGINX_DEBUG="--with-debug"
+endif
+
+CURDIR = $(.CURDIR)
+
+.PHONY: all clean build
+
+all: nginx/objs/nginx
+
+nginx/objs/Makefile:
+	cd $(NGINX_SOURCE_DIR) && \
+		./auto/configure \
+			$(MUNINN_NGINX_DEBUG) \
+			--with-http_ssl_module \
+			--with-compat \
+			--add-module=$(.CURDIR)
+
+nginx/objs/nginx: nginx/objs/Makefile
+	$(MUNIN_BEAR) make -C $(NGINX_SOURCE_DIR)
+
+clean:
+	make -C $(NGINX_SOURCE_DIR) clean
+