Close #560 - support custom validation tags

[samchon]

From now on, typia supports custom validation tags like below.

If you want to feel it earlier, run npm install --save typia@next command.

import typia from "typia";

export interface TagCustom {
    /**
     * Regular feature supported by typia
     *
     * @format uuid
     */
    id: string;

    /**
     * Custom feature composed with "$" + number
     *
     * @dollar
     */
    dolloar: string;

    /**
     * Custom feature composed with string + "abcd"
     *
     * @postfix abcd
     */
    postfix: string;

    /**
     * Custom feature meaning x^y
     *
     * @powerOf 10
     */
    log: number;
}

typia.addValidationTag("dollar")("string")(
    () => (value: string) =>
        value.startsWith("$") &&
        !isNaN(Number(value.substring(1).split(",").join(""))),
);

typia.addValidationTag("postfix")("string")(
    (text: string) => (value: string) => value.endsWith(text),
);

typia.addValidationTag("powerOf")("number")((text: string) => {
    const denominator: number = Math.log(Number(text));
    return (value: number) => {
        value = Math.log(value) / denominator;
        return value === Math.floor(value);
    };
});

[samchon]

Working well, but need to resolve #455 for detailed error reporting.

[samchon]

Changed API spec like below (#569):

typia.customValidators.insert("powerOf")("number")(
    (text: string) => {
        const denominator: number = Math.log(Number(text));
        return (value: number) => {
            value = Math.log(value) / denominator;
            return value === Math.floor(value);
        };
    }
);
typia.customValidators.insert("dollar")("string")(
    () => (value: string) => value.startsWith("$"),
);

interface TagCustom {
   /**
    * @powerOf 10
    */
   powerOf: number;

   /**
    * @dollar
    */
   dollar: string;
}