feat: 实现文件类型枚举的本地化支持

新增文件类型枚举的本地化功能，包括供应商、项目、公司、合同和客户文件类型。添加了相关的SQL表结构、Repository、Service、ViewModel和StringConverter实现。同时更新了文档说明如何创建和使用枚举类型的本地化功能。

修改了客户文件类型的相关代码，统一使用CustomerFileTypeLocalVo替代原有的CompanyCustomerFileTypeLocal，优化了代码结构和一致性。添加了文件类型枚举的缓存支持，提高了性能。

更新了create_enum.md文档，详细说明了文件类型枚举本地化的实现方式和相关组件清单。

client/src/main/java/com/ecep/contract/converter/CompanyFileTypeStringConverter.java

@@ -0,0 +1,24 @@
+package com.ecep.contract.converter;
+
+import com.ecep.contract.Desktop;
+import com.ecep.contract.service.CompanyFileTypeService;
+import com.ecep.contract.vo.CompanyFileTypeLocalVo;
+import javafx.util.StringConverter;
+
+public class CompanyFileTypeStringConverter extends StringConverter<CompanyFileTypeLocalVo> {
+    private final CompanyFileTypeService service;
+
+    public CompanyFileTypeStringConverter(CompanyFileTypeService service) {
+        this.service = service;
+    }
+
+    @Override
+    public String toString(CompanyFileTypeLocalVo object) {
+        return object.getValue();
+    }
+
+    @Override
+    public CompanyFileTypeLocalVo fromString(String string) {
+        return service.findByLocaleAndValue(Desktop.instance.getActiveEmployee().localeProperty().get(), string);
+    }
+}

client/src/main/java/com/ecep/contract/converter/ContractFileTypeStringConverter.java

@@ -0,0 +1,24 @@
+package com.ecep.contract.converter;
+
+import com.ecep.contract.Desktop;
+import com.ecep.contract.service.ContractFileTypeService;
+import com.ecep.contract.vo.ContractFileTypeLocalVo;
+import javafx.util.StringConverter;
+
+public class ContractFileTypeStringConverter extends StringConverter<ContractFileTypeLocalVo> {
+    private final ContractFileTypeService service;
+
+    public ContractFileTypeStringConverter(ContractFileTypeService service) {
+        this.service = service;
+    }
+
+    @Override
+    public String toString(ContractFileTypeLocalVo object) {
+        return object.getValue();
+    }
+
+    @Override
+    public ContractFileTypeLocalVo fromString(String string) {
+        return service.findByLocaleAndValue(Desktop.instance.getActiveEmployee().localeProperty().get(), string);
+    }
+}

client/src/main/java/com/ecep/contract/converter/CustomerFileTypeStringConverter.java

@@ -0,0 +1,28 @@
+package com.ecep.contract.converter;
+
+import com.ecep.contract.Desktop;
+import com.ecep.contract.service.CompanyCustomerFileTypeService;
+import com.ecep.contract.vo.CustomerFileTypeLocalVo;
+
+import javafx.util.StringConverter;
+
+/**
+ * 客户文件类型字符串转换器
+ */
+public class CustomerFileTypeStringConverter extends StringConverter<CustomerFileTypeLocalVo> {
+    private final CompanyCustomerFileTypeService service;
+
+    public CustomerFileTypeStringConverter(CompanyCustomerFileTypeService service) {
+        this.service = service;
+    }
+
+    @Override
+    public String toString(CustomerFileTypeLocalVo object) {
+        return object.getValue();
+    }
+
+    @Override
+    public CustomerFileTypeLocalVo fromString(String string) {
+        return service.findByLocaleAndValue(Desktop.instance.getActiveEmployee().localeProperty().get(), string);
+    }
+}

client/src/main/java/com/ecep/contract/converter/ProjectFileTypeStringConverter.java

@@ -0,0 +1,25 @@
+package com.ecep.contract.converter;
+
+import com.ecep.contract.Desktop;
+import com.ecep.contract.service.ProjectFileTypeService;
+import com.ecep.contract.vo.ProjectFileTypeLocalVo;
+
+import javafx.util.StringConverter;
+
+public class ProjectFileTypeStringConverter extends StringConverter<ProjectFileTypeLocalVo> {
+    private final ProjectFileTypeService service;
+
+    public ProjectFileTypeStringConverter(ProjectFileTypeService service) {
+        this.service = service;
+    }
+
+    @Override
+    public String toString(ProjectFileTypeLocalVo object) {
+        return object.getValue();
+    }
+
+    @Override
+    public ProjectFileTypeLocalVo fromString(String string) {
+        return service.findByLocaleAndValue(Desktop.instance.getActiveEmployee().localeProperty().get(), string);
+    }
+}

client/src/main/java/com/ecep/contract/converter/VendorFileTypeStringConverter.java

@@ -0,0 +1,24 @@
+package com.ecep.contract.converter;
+
+import com.ecep.contract.Desktop;
+import com.ecep.contract.service.VendorFileTypeService;
+import com.ecep.contract.vo.VendorFileTypeLocalVo;
+import javafx.util.StringConverter;
+
+public class VendorFileTypeStringConverter extends StringConverter<VendorFileTypeLocalVo> {
+    private final VendorFileTypeService service;
+
+    public VendorFileTypeStringConverter(VendorFileTypeService service) {
+        this.service = service;
+    }
+
+    @Override
+    public String toString(VendorFileTypeLocalVo object) {
+        return object.getValue();
+    }
+
+    @Override
+    public VendorFileTypeLocalVo fromString(String string) {
+        return service.findByLocaleAndValue(Desktop.instance.getActiveEmployee().localeProperty().get(), string);
+    }
+}