[Crowdstrike] Overhaul of Crowdstrike Falcon pipelines and mappings

[P1llus]

What does this PR do?

This PR is created to update the older crowdstrike falcon datastream to todays standard, this PR includes a lot of updates, trying to list them all here. This PR is also a preparation to a follow-up PR which adds new event types.

1. Adding what I believe is a complete set of test data in pipeline tests of the event types we currently support, new events will be in separate PR.
2. Removing unecessary ignore_failures, which only hides possible issues and makes it hard to troubleshoot.
3. Significant updates to ECS mappings, and removing unecessary custom fields, as they are mapped to ECS.
4. Moves processors from default.yml to their respective pipelines, to make it more obvious what event types the processors are meant to cover, and causes less issues.
5. Fixes wrong ECS mappings.
6. Add on_failure and event.kind for pipeline errors + tags for all processors.
7. Slight update to the docs.

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.

Related issues

• Relates #3358

[elasticmachine]

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

[elasticmachine]

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• Start Time: 2023-06-27T09:07:56.335+0000

• Duration: 16 min 40 sec

Test stats 🧪

Test	Results
Failed	0
Passed	21
Skipped	0
Total	21

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (2/2)	💚
Files	100.0% (9/9)	💚
Classes	100.0% (9/9)	💚
Methods	98.413% (62/63)	👍 5.079
Lines	94.735% (2861/3020)	👎 -2.306
Conditionals	100.0% (0/0)	💚

[kcreddy]

LGTM 👍🏼 Some minor clarifications

[elasticmachine]

Package crowdstrike - 1.15.0 containing this change is available at https://epr.elastic.co/search?package=crowdstrike