🐛 array form filed name should not contains bracket which led to invalid fieldname in ts codegen

[Jinof]

Describe the PR
Change FormName. Trim bracket in filedname

Relation issue
e.g. https://github.com/swaggo/swag/pull/118/files

Additional context
In gin binding, an array parameter goes like

type Teacher struct {
  Books []string `form:"books[]"`
}

In swaggo/swag less than v1.8.10, it's field name should comes from ps.Filed.Names[0] which is "Names", which goes to toLowerCamelCase and generate "names".

func (ps *tagBaseFieldParser) FieldName() (string, error) {
	var name string
	if ps.field.Tag != nil {
		// json:"tag,hoge"
		name = strings.TrimSpace(strings.Split(ps.tag.Get(jsonTag), ",")[0])

		if name != "" {
			return name, nil
		}
	}

	if ps.field.Names == nil {
		return "", nil
	}

	switch ps.p.PropNamingStrategy {
	case SnakeCase:
		return toSnakeCase(ps.field.Names[0].Name), nil
	case PascalCase:
		return ps.field.Names[0].Name, nil
	default:
		return toLowerCamelCase(ps.field.Names[0].Name), nil
	}
}

Since v1.8.11, FormName was introduced to parse form tag, which generates books[] tags, which lead to bad codegen in ts.
Ts code changes, which is not generated by tools, write by hand.
From:

const Teacher = {
  books: []
}

To:

const Teacher = {
  "books[]": []
}

Teacher."books[]" is not working in ts, which only can be use like Teacher["books[]"].

[sdghchj]

Hello, rebase your branch on the latest master, please.

[Jinof]

Hello, rebase your branch on the latest master, please.

Already rebase to latest master.

[sdghchj]

Rebase again, please.

[Jinof]

Rebase again, please.

done