Add build target for libmousefs_client.a static library

- Add CLIENT_CFILES and CLIENT_OFILES variables to Makefile
- Add rules to build object files and create static library
- Include libmousefs_client.a in the 'all' target
- Update clean target to remove library and object files
- Update .gitignore to ignore *.o and *.a build artifacts

The library includes: client.c, basic.c, tcp.c, message.c

.gitignore

@@ -1,3 +1,5 @@
 *.exe
 *.out
+*.o
+*.a
 chunk_server_data_*

Makefile

@@ -12,9 +12,13 @@ endif
 CFILES = $(shell find src -name '*.c')
 HFILES = $(shell find src -name '*.h')
 
+# Client library source files
+CLIENT_CFILES = src/client.c src/basic.c src/tcp.c src/message.c
+CLIENT_OFILES = $(CLIENT_CFILES:.c=.o)
+
 .PHONY: all clean
 
-all: mousefs_server$(EXT) mousefs_test$(EXT) example_client$(EXT)
+all: mousefs_server$(EXT) mousefs_test$(EXT) example_client$(EXT) libmousefs_client.a
 
 mousefs_server$(EXT): $(CFILES) $(HFILES)
 	gcc -o $@ $(CFILES) $(CFLAGS) $(LFLAGS) -Iinc -DBUILD_SERVER
@@ -25,11 +29,20 @@ mousefs_test$(EXT): $(CFILES) $(HFILES)
 example_client$(EXT): examples/main.c $(CFILES) $(HFILES)
 	gcc -o $@ examples/main.c $(CFILES) $(CFLAGS) $(LFLAGS) -Iinc
 
+# Client library build rules
+%.o: %.c $(HFILES)
+	gcc -c -o $@ $< $(CFLAGS) -Iinc
+
+libmousefs_client.a: $(CLIENT_OFILES)
+	ar rcs $@ $^
+
 clean:
-	rm                     \
+	rm -f                  \
 		mousefs_server.exe \
 		mousefs_server.out \
 		mousefs_test.exe   \
 		mousefs_test.out   \
 		example_client.exe \
-		example_client.out
+		example_client.out \
+		libmousefs_client.a \
+		$(CLIENT_OFILES)