build: 更新项目构建配置

- 添加 pyproject.toml 文件，配置项目信息和依赖
- 更新 requirements.txt，调整依赖版本
- 在 static.py 中添加版本号变量
- 添加 .python-version 文件，指定 Python 版本

pyproject.toml

@@ -0,0 +1,30 @@
+[project]
+name = "XHS-Downloader"
+version = "2.5.beta"
+description = "小红书（XiaoHongShu、RedNote）链接提取/作品采集工具：提取账号发布、收藏、点赞、专辑作品链接；提取搜索结果作品、用户链接；采集小红书作品信息；提取小红书作品下载地址；下载小红书无水印作品文件"
+authors = [
+    { name = "JoeanAmier", email = "yonglelolu@foxmail.com" },
+]
+readme = "README.md"
+license = "GPL-3.0"
+requires-python = ">=3.12,<3.13"
+dependencies = [
+    "aiofiles>=24.1.0",
+    "aiosqlite>=0.21.0",
+    "click>=8.1.8",
+    "emoji>=2.14.1",
+    "fastapi>=0.115.8",
+    "httpx[socks]>=0.28.1",
+    "lxml>=5.3.1",
+    "pyperclip>=1.9.0",
+    "pyyaml>=6.0.2",
+    "rookiepy>=0.5.6",
+    "textual>=1.0.0",
+    "uvicorn>=0.34.0",
+]
+
+[project.urls]
+Repository = "https://github.com/JoeanAmier/XHS-Downloader"
+
+[tool.uv.pip]
+index-url = "https://mirrors.ustc.edu.cn/pypi/simple"