feat(rules): New Suspicious XSL script execution rule

[rabbitstack]

What is the purpose of this PR / why it is needed?

Identifies a suspicious execution of XSL script via Windows Management Instrumentation command line tool or XSL transformation utility. Adversaries may bypass application control and obscure the execution of code by embedding scripts inside XSL files. Extensible Stylesheet Language (XSL) files are commonly used to describe the processing and rendering of data within XML files.

What type of change does this PR introduce?

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Uncomment one or more /kind <> lines:

/kind feature (non-breaking change which adds functionality)

/kind bug-fix (non-breaking change which fixes an issue)

/kind refactor (non-breaking change that restructures the code, while not changing the original functionality)

/kind breaking (fix or feature that would cause existing functionality to not work as expected

/kind cleanup

/kind improvement

/kind design

/kind documentation

/kind other (change that doesn't pertain to any of the above categories)

Any specific area of the project related to this PR?

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Uncomment one or more /area <> lines:

/area instrumentation

/area telemetry

/area rule-engine

/area filters

/area yara

/area event

/area captures

/area alertsenders

/area outputs

/area rules

/area filaments

/area config

/area cli

/area tests

/area ci

/area build

/area docs

/area deps

/area other

Special notes for the reviewer

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Does this PR introduce a user-facing change?

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