Add keyword argument support for all actions

[marcoroth]

This pull request adds tests and keyword argument support for all remaining actions. This is following up and finishing the work started in #22, #23, #24, #25 and 05914c4.

Keyword argument support

This means, that all actions can be invoked with both positional arguments and keyword arguments, or both at the same time.

Before:

turbo_stream.set_attribute("#element", "data-controller", "example")

After:

# All positional arguments (as before)
turbo_stream.set_attribute("#element", "data-controller", "example")

# Just value as keyword argument
turbo_stream.set_attribute("#element", "data-controller", value: "example")

# attribute and value as keyword arguments
turbo_stream.set_attribute("#element", attribute: "data-controller", value: "example")

# All arguments as keyword arguments
turbo_stream.set_attribute(targets: "#element", attribute: "data-controller", value: "example")

# this also allows the arguments to be passed in any order
turbo_stream.set_attribute(value: "example", attribute: "data-controller", targets: "#element")

# the same method can be used for both targeting a single element or multiple elements
turbo_stream.set_attribute(target:  "element",  attribute: "data-controller", value: "example")
turbo_stream.set_attribute(targets: ".element", attribute: "data-controller", value: "example")

The following actions are being updated for keyword argument support in this pull request:

• clear_storage
• console_table
• dispatch_event
• graft
• history_go
• inner_html
• insert_adjacent_html
• insert_adjacent_text
• morph
• outer_html
• push_state
• reload
• remove_attribute
• remove_css_class
• remove_storage_item
• replace_state
• reset_form
• scroll_into_view
• set_attribute
• set_cookie_item
• set_cookie
• set_dataset_attribute
• set_focus
• set_meta
• set_property
• set_storage_item
• set_style
• set_styles
• set_title
• text_content
• turbo_clear_cache
• turbo_frame_reload
• turbo_frame_set_src
• turbo_progress_bar_hide
• turbo_progress_bar_set_value
• turbo_progress_bar_show

Changes to the add_css_class action

The add_css_class action now accepts an array for the classes option:

turbo_stream.add_css_class(target: "post_1", classes: ["container", "text-center"])

Changes to the remove_css_class action

The remove_css_class action now accepts an array for the classes option:

turbo_stream.remove_css_class(target: "post_1", classes: ["container", "text-center"])

Changes to the set_styles action

The set_styles action now accepts a hash for the styles option:

turbo_stream.set_styles(target: "post_1", styles: { background: "black", color: "white" })