Implement method to retrieve logs for Chrome

[mamantoha]

Usage example:

require "../src/selenium"

service = Selenium::Service.chrome(driver_path: "/usr/bin/chromedriver")
driver = Selenium::Driver.for(:chrome, service: service)
capabilities = Selenium::Chrome::Capabilities.new
capabilities.chrome_options.args = ["no-sandbox", "headless", "disable-gpu"]
capabilities.logging_prefs = {"browser" => "ALL"}

session = driver.create_session(capabilities)

session.navigate_to("https://alerts.in.ua")

wait = Selenium::Helpers::Wait.new(timeout: 5.seconds, interval: 1.second)

# wait for console.log("loaded map") to be called
wait.until do
  session.log("browser").any? &.message.ends_with?("\"loaded map\"")
end

# ...