feat: support reuse tab with same host

[otakustay]

No description provided.

[otakustay]

Tested on Node 8, but got some error when running lint on Node 8:

yarn run v1.22.4
$ xo src/ --fix --node-version ">=10.0.0"
SyntaxError: Failed to load plugin 'unicorn' declared in 'BaseConfig » /Users/otakustay/Develop/better-opn/node_modules/xo/config/plugins.js': Invalid regular expression: /(?<=(?:^|[^\\])(?:\\\\)*\\)(?<data>x[\dA-Fa-f]{2}|u[\dA-Fa-f]{4}|u{[\dA-Fa-f]+})/: Invalid group
Referenced from: /Users/otakustay/Develop/better-opn/node_modules/xo/config/plugins.js
    at Object.<anonymous> (/Users/otakustay/Develop/better-opn/node_modules/eslint-plugin-unicorn/rules/escape-case.js:5:29)
    at Module._compile (module.js:653:30)
    at Object.Module._extensions..js (module.js:664:10)
    at Module.load (module.js:566:32)
    at tryModuleLoad (module.js:506:12)
    at Function.Module._load (module.js:498:3)
    at Module.require (module.js:597:17)
    at require (internal/module.js:11:18)
    at module.exports (/Users/otakustay/Develop/better-opn/node_modules/import-modules/index.js:47:29)
    at Object.<anonymous> (/Users/otakustay/Develop/better-opn/node_modules/eslint-plugin-unicorn/index.js:6:9)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Not sure it is something this commit introduced, or is already known.

[otakustay]

@ExiaSR I'm afraid your commit is not correct, "the URL for reuse tab" and "the URL to open" are different things, we need host to find a reusable tab but still open a URL with full pathname specified when no reusable tab can be found, the applescript requires both a arts

[michaellzc]

@otakustay let me know if this fixes your problem #15