feat(github): split repo and org webhooks to separate files

[maxamel]

Description

This PR splits multiple vcs webhooks into separate files so each one appears as new check violation.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my feature, policy, or fix is effective and works
• New and existing tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[lirshindalman]

can you add some logs here for path=path.replace(".json", str(idx) + ".json") ?

[maxamel]

We have the logs inside the persist method, so we'll know what we're writing and to where

[nimrodkor]

What about repo webhooks?

[nimrodkor]

Can you share an example of the new output?

[maxamel]

Example output:

`Check: CKV_GITHUB_7: "Ensure GitHub repository webhooks are using HTTPS"
	FAILED for resource: /github_conf/repository_webhooks2.json.*./github_conf/repository_webhooks2.json.CKV_GITHUB_7
	Severity: MEDIUM
	File: /repository_webhooks2.json:10-13
	Guide: https://docs.bridgecrew.io/docs/ensure-github-organization-and-repository-webhooks-are-using-https

	10 |         "config": {
	11 |             "content_type": "form",
	12 |             "insecure_ssl": "0",
	13 |             "url": "http://howdy.co.com"

Check: CKV_GITHUB_7: "Ensure GitHub repository webhooks are using HTTPS"
	FAILED for resource: /github_conf/repository_webhooks1.json.*./github_conf/repository_webhooks1.json.CKV_GITHUB_7
	Severity: MEDIUM
	File: /repository_webhooks1.json:10-13
	Guide: https://docs.bridgecrew.io/docs/ensure-github-organization-and-repository-webhooks-are-using-https

	10 |         "config": {
	11 |             "content_type": "form",
	12 |             "insecure_ssl": "0",
	13 |             "url": "http://dimdim.com"`