[Oracle] Adding support for more audit log types

[P1llus]

What does this PR do?

Oracle has both database and object based audit trails. The current package only support objects, this PR adds support for database as well, which is in a slightly different format

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.

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

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• Start Time: 2022-10-12T12:24:09.570+0000

• Duration: 16 min 32 sec

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Test	Results
Failed	0
Passed	21
Skipped	0
Total	21

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (1/1)	💚 2.712
Classes	100.0% (1/1)	💚 2.712
Methods	82.759% (24/29)	👎 -7.565
Lines	94.297% (248/263)	👍 2.658
Conditionals	100.0% (0/0)	💚

[taylor-swanson]

LGTM