Add support for FreeBSD+ARM64.

[alexdlaird]

Description

This PR can be merged when ngrok starts publishing the ARM64 binary for FreeBSD (which they've said they plan to in the near future).

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a schema change
• This change requires a documentation update

Testing Done

There is a test that iterates over all items in this list, so the status checks for this PR will begin to pass as soon as ngrok makes the URI available.

Checklist

• I have added tests that prove my change works as expected, and make test passes with no new errors or warnings
• I have run make check to ensure no new errors or warnings
• I have updated the docs, if applicable, and run make docs to ensure no new errors or warnings
• I have performed a self-review of my own code
• I have commented my code in particularly hard-to-understand areas

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
120	1	119	0

View the top 1 failed test(s) by shortest run time

com.github.alexdlaird.ngrok.installer.NgrokInstallerTest::testEnsureInstallerUrlsExistV3()

Stack Traces | 1.11s run time

org.opentest4j.AssertionFailedError: Installer URL returned 404: https://bin.equinox..../c/bNyj1mQVY4c/ngrok-v3-stable-freebsd-arm64.zip ==> expected: <200> but was: <404>
	at app//org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
	at app//org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)
	at app//org.junit.jupiter.api.AssertEquals.failNotEqual(AssertEquals.java:197)
	at app//org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:150)
	at app//org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:563)
	at app//com.github.alexdlaird.ngrok.installer.NgrokInstallerTest.testEnsureInstallerUrlsExistV3(NgrokInstallerTest.java:419)
	at java.base@21.0.9/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base@21.0.9/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base@21.0.9/java.util.ArrayList.forEach(ArrayList.java:1596)

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[Copilot]

Pull Request Overview

This PR adds support for FreeBSD on ARM64 architecture by adding a new enum value to the NgrokV3CDNUrl enum. The change enables ngrok installation on FreeBSD systems running on ARM64 processors.

• Adds FREEBSD_x86_64_arm enum value for FreeBSD ARM64 binary support
• Updates the enum to include the appropriate download URL for the FreeBSD ARM64 binary

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