Overlap cmdbuffer creation and cmdbuffer execution in Vulkan backend by submitting...

Overlap cmdbuffer creation and cmdbuffer execution in Vulkan backend by submitting smaller cmdbuffers early. (llama/9118)

* Overlap cmdbuffer creation and cmdbuffer execution in Vulkan backend by submitting smaller cmdbuffers early.

* fix compile issues

* Fix issues where the last submit wasn't executed or handled properly.

* remove trailing whitespace

* Repair GGML_VULKAN_CHECK_RESULTS

* Increase submit counter only if actual work has been submitted and increase submit count to 100.

* Fix some nodes are not checked with GGML_VULKAN_CHECK_RESULTS enabled.