difftest: Remove diff_rat and its related ports, when both env.EnableDifftest and env.AlwaysBasicDiff are false.

This bug will be triggered when the ptr shift step is greater than the ptr size

* func(Decode): support vmvnr

* type(comment):add some comments for DecodeUnitComplex.scala

* fix(vsmul_vx): fix a bug of vsmul_vx's decode

* func(VecDecoder):support vmv_s_x in vialuF

* pom(yunsuan): support vmv_s_x in VialuFixType

func(UopDivType): support UopDivType.VEC_COMPRESS & vcompress test pass
func(VIMac): add VIMac
pom(yunsuan): add VimacType

* func(UopDivType): support UopDivType.VEC_COMPRESS & vcompress test pass

* func(VIMac): add VIMac

1. support for vmul/vmvmulh/vmvmulhu/vmvmulhsu
2. support for vmacc/vnmsac/vmadd/vnmsub

* pom(yunsuan): add VimacType

1. func(IALU): add IALU V5
2. fix(VIntMisc64b): fix a bug in VIntMisc64b
3. fix(vrgather): fix a bug that the value of vrgather_vd depends on ma

func(vector): support more vector inst

func(UopDivType): support VEC_0MX/VEC_VMV/VEC_0MM
pom(yunsuan): add some test & fix some bugs
func(UopDivType): support VEC_0MX_VFIRST
fix(vcpop_m): fix bug that vs1 should be 0 when uopIdx === 0.U in vcpop_m
fix(UopDivType): fix some bugs about UopDivType.VEC_VMV
pom(yunsuan): fix some bugs about VMask & add IALU V4
style(UopDivType): rename VEC_0MX/VEC_VMV/VEC_0MX_VFIRST to VEC_M0X/VEC_MVV/VEC_M0X_VFIRST

1. fix a bug about Instruction splitting of UopDivType.VEC_VMV
2. fix a bug decode of viota_m/vid_v

1. add Vector Idiv module
2. fix(package): fix bug that dummy and vnclip_wv encoding conflicts
3. fix(VialuFixType): fix a bug that vnclip_wv should be sign

* func(UopDivType): support VEC_SLIDEUP/VEC_ISLIDEUP/VEC_SLIDEDOWN/VEC_ISLIDEDOWN

* pom(yunsuan): add isVsilde in VpermType & fix bugs of Permutation

* func(DecodeUnitComp): support VEC_VRED of UopDivType

* fix(vxsat):fix bug that VPU's vxsat shout be arbitrated

* pom(yunsuan):fix Decode of vmvsx & add some test for VPERM

* func(DecodeUnitComp): support vfslide1up.vf

* func(DecodeUnitComp):support vslide1down & vfslide1down

* pom(yunsuan):add vfslide1up & vfslide1down

1. func(VFMA):add vfmsac, vfnmsac, vfmadd, vfnmadd, vfmsub, vfnmsub, vfwmul, vfwmacc, vfwnmacc, vfwmsac, vfwnmsac and their test supports
2. func(VpermType): add vfslide1up & vfslide1down

bump ready-to-run

1. func(VPERM): fix tail process, optimize vcompress, change vslide module name
2. func(VPERM): change to 2-stage
3. test(VPERM): add golden model and test: vslidedown
4. test(VPERM): set vxsat=0 for vperm
5. test(VFADD): support vector-scalar operations func(VFADD): support vector-scalar operations
6. test: include
7. func(VFMA): add input:op_code,frs1,is_frs1; support vfmul.vv
8. func(VFMA):add vfmul.vf vfnmacc.vv vfnmacc.vf and their test supports
9. func(IALU):add IALU V3

* fix(decode): fix decode bug of selImm

1. fix decode bug of selImm
2. change VipuType to VpermType

* func(yunsuan): add VIAlu code v3

1. add VIAlu code v3
2. Update the IO of VFPU

* pom(yunsuan): add IALU V3

1. func(VPERM): fix tail process, optimize vcompress, change vslide module name
2. func(VPERM): change to 2-stage
3. test(VPERM): add golden model and test: vslidedown
4. test(VPERM): set vxsat=0 for vperm
5. test(VFADD): support vector-scalar operations func(VFADD): support vector-scalar operations
6. test: include <algorithm>
7. func(VFMA): add input:op_code,frs1,is_frs1; support vfmul.vv
8. func(VFMA):add vfmul.vf vfnmacc.vv vfnmacc.vf and their test supports
9. func(IALU):add IALU V3

1. pom(build.sbt):Update the version of scala in sbt
2. func(VIntFixpAlu):add test for VIntFixpAlu
3. fix(vand): fix vand OPType
4. fix(VIntAdder64b):fix a bug that mask inst result should be 1 when !vm && !vmask(i)