feat: add time zone configuration applet to System Configuration

programs/libs/libtimezonesapplet/Makefile

@@ -0,0 +1,69 @@
+# Makefile for the Time Zone shared desktop applet
+# Copyright (c) 2026 Daniel Hammer
+
+MAKEFLAGS += -rR
+.SUFFIXES:
+
+TOOLCHAIN_PREFIX := $(shell cd ../../.. && pwd)/toolchain/local/bin/x86_64-elf-
+ifneq ($(wildcard $(TOOLCHAIN_PREFIX)gcc),)
+    CXX := $(TOOLCHAIN_PREFIX)g++
+    LD  := $(TOOLCHAIN_PREFIX)ld
+else
+    CXX := g++
+    LD  := ld
+endif
+
+OUTDIR := ../../bin/os
+OBJDIR := obj
+TARGET := $(OUTDIR)/libtimezonesapplet.lib
+
+CXXFLAGS := \
+    -std=gnu++20 \
+    -g -O2 -pipe \
+    -Wall \
+    -Wextra \
+    -nostdinc \
+    -ffreestanding \
+    -fno-stack-protector \
+    -fno-stack-check \
+    -fPIC \
+    -fno-rtti \
+    -fno-exceptions \
+    -ffunction-sections \
+    -fdata-sections \
+    -m64 \
+    -march=x86-64 \
+    -mno-red-zone \
+    -mcmodel=small \
+    -MMD -MP \
+    -I ../../include \
+    -isystem ../../include/libc \
+    -isystem ../../../kernel/freestnd-c-hdrs/x86_64/include \
+    -isystem ../../../kernel/freestnd-cxx-hdrs/x86_64/include
+
+LDFLAGS := \
+    -shared \
+    --build-id=none \
+    --hash-style=sysv \
+    -m elf_x86_64 \
+    -z max-page-size=0x1000
+
+SRCS := src/libtimezonesapplet.cpp
+OBJS := $(addprefix $(OBJDIR)/,$(SRCS:.cpp=.o))
+
+.PHONY: all clean
+
+all: $(TARGET)
+
+$(TARGET): $(OBJS) Makefile
+	mkdir -p $(OUTDIR)
+	$(LD) $(LDFLAGS) $(OBJS) -o $@
+
+$(OBJDIR)/%.o: %.cpp Makefile
+	mkdir -p $(dir $@)
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+
+-include $(OBJS:.o=.d)
+
+clean:
+	rm -rf $(OBJDIR) $(TARGET)