target/loongarch: Implement xvreplve xvinsve0 xvpickve

target/loongarch: Implement xvreplve xvinsve0 xvpickve

This patch includes:
- XVREPLVE.{B/H/W/D};
- XVREPL128VEI.{B/H/W/D};
- XVREPLVE0.{B/H/W/D/Q};
- XVINSVE0.{W/D};
- XVPICKVE.{W/D};
- XVBSLL.V, XVBSRL.V.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230914022645.1151356-53-gaosong@loongson.cn>