refactor(Bpu): Separate history-related logic from Bpu

[TheKiteRunner24]

The BPU top module contains a significant amount of combinatorial logic related to history management. We have separated the history-related logic into a standalone module, which provides a slight improvement in area efficiency.

[XiangShanRobot]

[Generated by IPC robot]
commit: 7528c0a

commit	astar	copy_and_run	coremark	gcc	gromacs	hmmer-Vector	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
7528c0a	1.819	0.442	2.636	1.235	2.143	1.501	2.140	2.361	0.939	1.408	1.984	3.113	2.565	2.271	3.303

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	hmmer-Vector	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
2dbaa2e	1.819	0.442	2.636	1.227	2.143	1.501	2.140	2.361	0.939	1.401	1.984	3.113	2.565	2.271	3.303
9cd76b2	1.819	0.442	2.636	1.229	2.143	1.501	2.140	2.361	0.939	1.401	1.984	3.113	2.565	2.271	3.303
e50a46e	1.819	0.442	2.636	1.238	2.143	1.501	2.140	2.361	0.939	1.401	1.984	3.113	2.565	2.271	3.303
362cda5	1.819	0.442	2.636	1.231	2.143	1.501	2.140	2.361	0.939	1.400	1.984	3.113	2.565	2.271	3.303
0a56a7d	1.819	0.442	2.636	1.230	2.143	1.501	2.140	2.361	0.939	1.405	1.984	3.113	2.565	2.271	3.303
416c253	1.819	0.442	2.636	1.230	2.143	1.501	2.140	2.361	0.939	1.401	1.984	3.113	2.565	2.271	3.303
26d03c8	1.819	0.442	2.636	1.227	2.143	1.501	2.140	2.361	0.939	1.405	1.984	3.113	2.565	2.271	3.303
1a9a164	1.819	0.442	2.636	1.221	2.143	1.501	2.140	2.361	0.939	1.401	1.984	3.113	2.565	2.271	3.303
0964a97	1.819	0.442	2.636	1.230	2.143	1.501	2.140	2.361	0.939	1.401	1.984	3.113	2.565	2.271	3.303