[HAL] Add command buffer flush and invalidate operations (#24945)

This PR adds HAL and runtime plumbing for ordered command-buffer buffer
flush and invalidate operations.

It introduces:

* `hal.command_buffer.flush_buffer`
* `hal.command_buffer.invalidate_buffer`
* HAL-to-VM lowering and VM imports
* runtime command-buffer API and vtable hooks
* VM module/shim plumbing
* inline command-buffer support
* deferred command-buffer recording/replay support
* HAL IR and HAL-to-VM test coverage

The operations carry a buffer reference, offset, and length and are
intended to represent execution-ordered cache maintenance for shared
non-coherent memory.

Stream-to-HAL lowering is intentionally left unchanged in this PR. Some
backends, especially Vulkan, require queue/submission-level handling to
preserve execution-time ordering because a HAL command buffer is
currently replayed into a single native `VkCommandBuffer`. Enabling
Stream lowering before that backend support exists could cause
unsupported runtime paths.

This PR therefore focuses on establishing the HAL/runtime infrastructure
first. Backend-specific execution support and Stream lowering can follow
separately.

Related to #24930.

AI Tool Disclosure
Assisted by codex for code base exploration

Signed-off-by: purnima <purnima.shrivastava@sandlogic.com>