feat(playwright): checking network stuff

[kobenguyent]

Motivation/Description of the PR

• feat(playwright): checking network stuff
• implemention based on https://gist.github.com/ngraf/554b8ea51a6bcda47cd8975c76a2343f from @ngraf

Applicable helpers:

• Playwright

Checklist:

• Tests have been added
• Documentation has been added (Run npm run docs)
• Lint checking (Run npm run lint)
• Local tests are passed (Run npm test)

[ngraf]

I am happy to see my unpolished custom helper being picked up and potentially becoming part of official CodeceptJS library.
The code as it is in the Gist is already battle proven. I used this helper a lot over many months of productive execution.

There is one feature missing that I would consider important before it is mature enough for community:
Support to check POST parameters with I.seeTraffic. Currently only GET parameters are supported. I am sure it is doable to check POST parameters as well. I was just lagging the need and time to implement this as well.

[DavertMik]

@ngraf could you improve this PR by adding usage examples into docblocks? Please, please!

@kobenguyent is it possible for you to implement

Support to check POST parameters with I.seeTraffic

if not, this limitation should be mentioned in documentation

[kobenguyent]

@ngraf could you improve this PR by adding usage examples into docblocks? Please, please!

@kobenguyent is it possible for you to implement

Support to check POST parameters with I.seeTraffic

if not, this limitation should be mentioned in documentation

updated the docs along with POST verifications

[ngraf]

@ngraf could you improve this PR by adding usage examples into docblocks? Please, please!

Ok, I will try to contribute usage examples in doclblocks this week @DavertMik .

[ngraf]

@ngraf could you improve this PR by adding usage examples into docblocks? Please, please!

As promised I created a pull-request that contains some examples for the docblocks:
#3758