move embedded tutorials out of protocol tree

tutorials/http/http-server/Makefile

@@ -1,8 +1,10 @@
+REPO_ROOT ?= ../../..
+
 PROG ?= example                   # Program we are building
 DELETE = rm -rf                   # Command to remove files
 OUT ?= -o $(PROG)                 # Compiler argument for output file
-SOURCES = main.c mongoose.c       # Source code files
-CFLAGS = -W -Wall -Wextra -g -I.  # Build options
+SOURCES = main.c $(REPO_ROOT)/mongoose.c       # Source code files
+CFLAGS = -I$(REPO_ROOT) -W -Wall -Wextra -g -I.  # Build options
 #CFLAGS += -fsanitize=address,undefined,alignment
 
 # Mongoose build options. See https://mongoose.ws/documentation/#build-options
@@ -30,4 +32,4 @@ clean:                    # Cleanup. Delete built program and all build artifact
 
 vc98: CC = cl
 vc98:
-	$(CC) $(SOURCES) $(CFLAGS_MONGOOSE) -DMG_ENABLE_IPV6=0 $(CFLAGS_EXTRA) /MD /Feserver.exe
+	$(CC) $(SOURCES) -I$(REPO_ROOT) $(CFLAGS_MONGOOSE) -DMG_ENABLE_IPV6=0 $(CFLAGS_EXTRA) /MD /Feserver.exe