v1.2.0

Hardware support for:
- Vector slide instructions (vslideup, vslide1up, vfslide1up, vslidedown, vslide1down, vfslide1down)
Software implementation of a integer 2D convolution kernel
CI job to check the conv2d execution on Ara

Removed dependency to a specific gcc g++ version in Makefile
Arithmetic and memory vector instructions with vl == 0 are considered as a NOP
Increment bit width of the vector length type (vlen_t), accounting for vectors whose length is VLMAX
Fix vector length calculation for the MaskB operand, which depends on vsew
Fix typo on the vrf_pnt updating logic at the Mask Unit
Update README to highlight dependency with Spike
Update Bender's link dependency to the public CVA6 repository
Retrigger the compile module if the ModelSim compilation did not succeed

The encoding.h in the common Ara runtime is now a copy from the encoding.h in the Spike submodule

Hardware support for:
- Vector slide instructions (vslideup, vslide1up, vfslide1up, vslidedown, vslide1down, vfslide1down)
Software implementation of a integer 2D convolution kernel
CI job to check the conv2d execution on Ara

Removed dependency to a specific gcc g++ version in Makefile
Arithmetic and memory vector instructions with vl == 0 are considered as a NOP
Increment bit width of the vector length type (vlen_t), accounting for vectors whose length is VLMAX
Fix vector length calculation for the MaskB operand, which depends on vsew
Fix typo on the vrf_pnt updating logic at the Mask Unit
Update README to highlight dependency with Spike
Update Bender's link dependency to the public CVA6 repository
Retrigger the compile module if the ModelSim compilation did not succeed

The encoding.h in the common Ara runtime is now a copy from the encoding.h in the Spike submodule

ara