feat: 初始化Easy Patch插件及依赖文件

- 添加Blender插件核心文件：__init__.py、ui.py、property.py、preference.py
- 添加插件工具模块：g.py、loop.py、generate_loop.py、const.py、op.py
- 添加翻译工具：utils/trans.py
- 添加PuLP线性规划库及其依赖文件，包括CBC求解器二进制文件
- 添加.gitignore和VSCode配置文件

g.py

@@ -0,0 +1,118 @@
+from enum import Enum
+
+
+def clear_all_variables():
+    global_vars = globals()
+
+    for var in list(global_vars):
+        if not var.startswith("__") and not callable(global_vars[var]):
+            global_vars[var] = None
+
+    init_variables()
+
+
+def init_variables():
+    global_vars = globals()
+
+    global boundaries
+    boundaries = set()
+
+    global patches
+    patches = set()
+
+    global loops
+    loops = []
+
+    global temp_bm_verts
+    temp_bm_verts = set()
+
+    global temp_bm_edges
+    temp_bm_edges = set()
+
+    global snap_bvh_trees
+    snap_bvh_trees = []
+
+    global last_update_hovering_timestamp
+    last_update_hovering_timestamp = 0
+
+    global last_update_snap_timestamp
+    last_update_snap_timestamp = 0
+
+    global mode
+    mode = Mode.NORMAL
+
+    global is_snap_surface
+    is_snap_surface = True
+
+    global is_auto_search_pattern
+    is_auto_search_pattern = True
+
+    global is_snap_opposite
+    is_snap_opposite = True
+
+
+is_running = False
+running_exception = None  # 存放外部发生的错误，让他可以raise到用户界面
+
+# 绘制曲线中
+drawing_verts_snap_vertex = None
+drawing_path_boundary = None
+
+
+patches = set()  # 建成的补丁
+boundaries = set()  # 建成的边
+loops = (
+    []
+)  # boundary环路列表，元素是loop，loop是元组的列表，元组第一个元素是boundary，第二个元素是方向
+
+# 记录插件创建的点和边，防止误删搞坏用户的网格，使用set，提高in语句的性能
+# TODO: 網格更新的時候沒有及時更新，但是暂时没问题，不考虑这个，只在最后获取顶点数的时候有问题
+temp_bm_verts = set()
+temp_bm_edges = set()
+
+# 全局设置
+is_snap_surface = True
+is_snap_opposite = True
+is_auto_search_pattern = True
+
+snap_bvh_trees = []  # 要吸附的bvh_tree
+obj = None  # 编辑物体
+obj_bm = None  # 编辑物体的bm
+obj_me = None  # 编辑物体的data即mesh对象
+obj_bvh_tree = None  # 编辑物体的data即mesh对象
+
+hovering_loop = None
+hovering_boundary = None
+
+temp_merge_boundary_1 = None  # 临时变量，用于临时储存合并boundary
+
+last_update_hovering_timestamp = 0
+last_update_snap_timestamp = 0
+
+last_mouse_co_2d = None
+
+last_echo_time = 0
+
+
+class Mode(Enum):
+    NORMAL = 1
+    DRAWING = 2
+    MERGE_BOUNDARY = 3
+
+
+mode = Mode.NORMAL
+
+mirror_path = []
+
+is_drawing_along_mirror = False
+is_drawing_along_mirror_persist = False
+
+is_changing_mesh = False
+
+
+is_redraw_boundary = False
+last_boundary_data = None
+is_redraw_pattern = False
+last_pattern_data = None
+is_redraw_hovering = False
+last_hovering_data = None