Live Metrics Filtering: Part 1 of 5 - port filtering functionality

[harsimar]

Description

This PR includes:

• Port functionality from filter.ts in node repo to Filter.java. This is responsible for filtering any telemetry item.
• New types: TelemetryColumns & it's child classes. These exist to make filtering easier - instead of using TelemetryItems directly, needed some fields to be boolean or numeric.
• Added a function for parsing timestamps from filtering configuration (it's in a different format than whats in FormattedDuration.java)
• Added util function for converting FormattedDuration string back to microseconds, for filtering of durations.
• Added unit tests for Filter.java & the util function

None of this new code is actually used in the QuickPulseDataCollector yet - that's for a future PR. Spec: https://github.com/aep-health-and-standards/Telemetry-Collection-Spec/blob/main/ApplicationInsights/live-metrics-filtering.md

All SDK Contribution checklist:

• [x] The pull request does not introduce [breaking changes]
• [ ] CHANGELOG is updated for new features, bug fixes or other significant changes.
• [x] I have read the contribution guidelines.

General Guidelines and Best Practices

• [x] Title of the pull request is clear and informative.
• [] There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• [x] Pull request includes test coverage for the included changes.

[azure-sdk]

API change check

API changes are not detected in this pull request.