feat: Allow to retrieve runtime policy event by ID (sysdiglabs#173)

Adds a method called `get_policy_event` that retrieves an event by it's ID.

fix: Return the correct policyID and policyName in get_image_scanning…

…_results (sysdiglabs#172)

feat: Add get_image_scanning_results method to SdScanningClient (sysd…

…iglabs#171)

This method will allow to retrieve the scanning results for all the policies, or just the specified one.

feat: Allow filtering events v2 by time (sysdiglabs#169)

fix: Solve get_dashboards with light retrieval (sysdiglabs#167)

fix: Referenced self on static method on IBM Auth Helper (sysdiglabs#166

)

feat: Add download_cve_report_csv method to download the csv report (s…

…ysdiglabs#161)

This method takes a while in environments where the amount of images is very high, please use it carefully.

feat: get_dashboards now can retrieve the full information of all the…

… dashboards (sysdiglabs#154)

chore: Relax dependencies for installation (sysdiglabs#150)

This commit relaxes dependencies, not pinning them to a specific version, so they can work with newer versions, and requiring requests>=2.23, urllib3>=1.25.8 instead of requests==2.24, urllib3==1.25.10

chore: Bump library version

Signed-off-by: Federico Barcelona <fede_rico_94@hotmail.com>