Add Git Repository Resource in Xray API's

[attiasas]

• All tests passed. If this feature is not already covered by the tests, I added new tests.
• All static analysis checks passed.
• This pull request is on the dev branch.
• I used gofmt for formatting the code before submitting the pull request.

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Git Repository Resource

from Xray version 3.111.0 a new resource is available: Git Repository you can define it to a watch/policy/ignore rules....
It will generate violations based on the watches that are defined on the resource. ticket

• Add options to pass Git Repository Url to act as a violation context in scan graph (similar to project, watches...)
• adds the new git_repositories filter attribute in ignore-rule and watch
• adds the new jas filter attributes in policy

New API to retrieve active watches on resource

Adds a new API to get active watches based on a given resource (git repo / projectKey)

Other Changes:

• add validation on ignore rule if more than one filter is present at a single rule
• Removing unused attributes and code (enrich)
• Remove XscGitInfoContext from scan graph since its not related anymore

[eranturgeman]

reviewed, see my comments