fix: field head rune

[imdszxs]

CREATE TABLE user (
id bigint(10) NOT NULL AUTO_INCREMENT,
123user varchar(50) NOT NULL DEFAULT '' COMMENT '用户',
PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

当字段以数字开头时，生成的model以下划线开头，会被认为私有，直接执行生成的findOne查询会报错 value not addressable or interfaceable

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.10%. Comparing base (8690859) to head (254f5c3).
Report is 247 commits behind head on master.

Additional details and impacted files

see 255 files with indirect coverage changes

[kesonan]

I think the best solution is rename the column.