[Cisco Umbrella] Add Audit Log support

[legoguy1000]

What does this PR do?

Add Audit Logs support

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

Author's Checklist

• [ ]

How to test this PR locally

Related issues

• Closes Cisco Umbrella Enhancements #2295

Screenshots

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Build stats

• Start Time: 2022-05-18T13:23:55.838+0000

• Duration: 12 min 27 sec

Test stats 🧪

Test	Results
Failed	0
Passed	8
Skipped	0
Total	8

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[r00tu53r]

/test

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (1/1)	💚 3.589
Classes	100.0% (1/1)	💚 3.589
Methods	93.75% (15/16)	👍 5.461
Lines	92.537% (310/335)	👍 3.52
Conditionals	100.0% (0/0)	💚

[r00tu53r]

Sample auditlog from my sandbox environment
auditlog.csv
.

[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

[efd6]

/test

[legoguy1000]

@efd6 can this be merged?