:sparkles: Update unsafeblock probe to detect use of Java's Unsafe classes

[thomasleplus]

What kind of change does this PR introduce?

This PR is adding Java support to the probe introduced by #4499. It looks for references to the classes sun.misc.Unsafe or jdk.internal.misc.Unsafe classes which can bypass the JVM's memory safety features (garbage collection, checks against out-of-bound read and write, etc.).

Note that the PR includes a Java source code parser generated with Antlr4 that can be reused to add more Java probes and checks in the future.

• [x] PR title follows the guidelines defined in our pull request documentation

What is the current behavior?

The probe looks for unsafe patterns in go and c# code.

What is the new behavior (if this is a feature change)?

The probe also looks for unsafe patterns in Java code.

• [x] Tests for the changes have been added (for bug fixes/features)

Which issue(s) this PR fixes

Contributes to #3736.

Special notes for your reviewer

Does this PR introduce a user-facing change?

For user-facing changes, please add a concise, human-readable release note to the release-note

(In particular, describe what changes users might need to make in their application as a result of this pull request.)

Added Java support to probe for non-memory safe practices by detecting references to the sun.misc.Unsafe and jdk.internal.misc.Unsafe classes.

[github-actions[bot]]

This pull request has been marked stale because it has been open for 10 days with no activity

[github-actions[bot]]

This pull request has been marked stale because it has been open for 10 days with no activity