[FEATURE]: Add support for event alert suppression

[hrtmhood]

Describe the solution you'd like
Support for maintaining a list of events suppressed by the isi event suppress CLI commands

Describe alternatives you've considered
Manual management via CLI

Additional context

rowlf-3# isi event suppress modify --help
Description:
    Suppress alerting for a specific event ID.

Required Privileges:
    ISI_PRIV_EVENT

Usage:
    isi event suppress modify <id>
        [{--suppress | -s} <boolean>]
        [{--verbose | -v}]
        [{--help | -h}]

Options:
    <id>
        Event ID.
    --suppress | -s <boolean>
        Suppress alerting for an event.

[gokul-srivathsan]

@hrtmhood , Could you please disclose the powerscale version you are targeting here?

[hrtmhood]

Hi @gokul-srivathsan - all supported versions. This exists on 9.8 and onwards at least