feat(endpoint): support regex in endpoint parameters

[nicolamacoir]

Currently, regular expressions are not supported in the path of endpoints in zhttp.

Example:

controller.endpoint(
  get('/:code([a-Z]{3})')
    .input(
      z.object({
        params: z.object({
          code: z.string(),
        }),
      }),
    )
    .handler(async ({ params: { code } }, req, res) => {
    }),
);

Will throw a typing error:

Argument of type 'ZodObject<{ params: ZodObject<{ code: ZodString; }, "strip", ZodTypeAny, { code: string; }, { code: string; }>; }, "strip", ZodTypeAny, { ...; }, { ...; }>' is not assignable to parameter of type 'InputValidationSchema<"/:code([a-Z]{3})">'.
  Type '{ params: z.ZodObject<{ code: z.ZodString; }, "strip", z.ZodTypeAny, { code: string; }, { code: string; }>; }' is not assignable to type '{ params?: ZodObject<{ "code([a-Z]{3})": ZodString; }, UnknownKeysParam, ZodTypeAny, { "code([a-Z]{3})": string; }, { ...; }> | undefined; query?: ZodObject<...> | undefined; body?: ZodType<...> | undefined; }'.
    Types of property 'params' are incompatible.
      Type 'ZodObject<{ code: ZodString; }, "strip", ZodTypeAny, { code: string; }, { code: string; }>' is not assignable to type 'ZodObject<{ "code([a-Z]{3})": ZodString; }, UnknownKeysParam, ZodTypeAny, { "code([a-Z]{3})": string; }, { ...; }>'.
        Property '"code([a-Z]{3})"' is missing in type '{ code: z.ZodString; }' but required in type '{ "code([a-Z]{3})": ZodString; }'.