[rocjitsu] Add execution fuzz campaign

[kuhar]

Exercise arbitrary instruction streams through wavefront and compute-unit execution across every supported AMDGPU ISA family, with deterministic register and memory initialization, bounded instruction budgets, automatic target and async-mode selection, and generated instruction seeds.

Route unsupported guest encodings encountered during CU stepping through ordinary wave-failure diagnostics while preserving direct instruction execution behavior.

Add multithreaded standalone, AFL++, sanitizer, and TSan entry points plus a resumable campaign runner that preserves active inputs, deduplicates findings, and tolerates partial deadline records.

Cover target selection, execution reachability, unsupported fetched encodings, concurrent async WMMA work, replay behavior, campaign checkpointing, and CLI contracts.

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[therock-pr-bot]

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Check	Status	Details
📝 PR Description	❌ Fail	Error: PR description must reference a JIRA ID, ISSUE ID, or a GitHub closing keyword. Expected: include a JIRA ID / ISSUE ID line (separator : or -, or omitted; value may be a JIRA key, a number with/without #, or a link), OR a closing keyword + issue reference. Accepted examples: • JIRA ID : TESTAUTO-6039 • JIRA ID - #330 • JIRA ID #330 • JIRA ID (on separate line) ROCM-25757 • ISSUE ID : TESTUTO-3334 • ISSUE ID #3334 • ISSUE ID - TESTAUTO-3433 • ISSUE ID (on separate line) AIRUNTIME-2352 • ISSUE ID : https://github.com/<org_name>/<repo_name>/issues/1234 • Closes #10 • Fixes octo-org/octo-repo#100 • Resolves: #123 • #123 • https://github.com/<org_name>/<repo_name>/issues/123 Current: no valid JIRA/ISSUE/closing-keyword reference found
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🔎 pre-commit	✅ Pass	—
🚫 Draft PR	🔜 To Be Enabled	—
🚩 Feature Flag	🔜 To Be Enabled	—
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