ggml-cpu: templateify ggml_compute_forward_rope_f32 and _f16 (ggml-org#16805)

* extract rotate_pairs logic from ggml_compute_forward_rope_f32

* templateify ggml_compute_forward_rope_f32 and _f16

* abort when rope type not supported, remove GLM from test-rope

* add imrope branch to switch

* add rope tests for perf

* Update ggml/src/ggml-cpu/ops.cpp

Co-authored-by: Georgi Gerganov <[email protected]>

* Update ggml/src/ggml-cpu/ops.cpp

Co-authored-by: Georgi Gerganov <[email protected]>

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Co-authored-by: Georgi Gerganov <[email protected]>

Author: duduta