Automatically generate Go interfaces code, etc.

[canstand]

Due to the rewrite of the go code generation scripts, it brings the following breaking changes:

• Optimized generated comments. Links and Deprecated tags in Go doc comments now work.
  • May cause many Deprecated lint errors, please update the call or use //nolint:staticcheck to ignore.
• Added event interface methods. For example Page.OnDialog() etc.
• The signatures of some interface methods have changed, for example:
  • Unified optional parameter naming. For example, previously all Click used PageClickOptions, now

    Locator.Click(options ...LocatorClickOptions)
    Page.Click(selector string, options ...PageClickOptions)
    Frame.Click(selector string, options ...FrameClickOptions)

  • Some parameters are generated as new types or names, e.g. Page.AddInitScript(script Script)
• Removed several methods that were not documented upstream. These methods can be safely converted to other existing methods. For example
  • Page.ExpectedDialog can use Page.OnDialog instead.
  • All xxxAssertions.NotTo..., use .Not().xxx pls.

[mxschmitt]

didn't do a line by line review but looks all reasonable.

[mxschmitt]

Suggested change

// networkidle is DISCOURAGED

[canstand]

Will do this in next pr.

[mxschmitt]

I in the past used it to differentiate if a user did set a string, since in Go a String can't be nil.

[canstand]

According to the documentation, recordVideo itself can be nil, and path is required once the recordVideo parameter is provided. When generating type members, the script will judge whether the primitive type needs to be referenced by pointer or not.

## context-option-recordvideo
* langs: js
- `recordVideo` <[Object]>
  - `dir` <[path]> Path to the directory to put videos into.
  - `size` ?<[Object]> Optional dimensions of the recorded videos. If not specified the size will be equal to `viewport`
    scaled down to fit into 800x800. If `viewport` is not configured explicitly the video size defaults to 800x450.
    Actual picture of each page will be scaled down if necessary to fit the specified size.
    - `width` <[int]> Video frame width.
    - `height` <[int]> Video frame height.

[mxschmitt]

Impressive work, thanks for putting effort into this.