feat(dev): dev dockerfile

[hkimw]

Summary

• Add Dockerfile.dev for a Python/Node SystemVerilog IDE development image.
• Install free/open HDL and FPGA tooling, including Yosys, Icarus, Verilator, OSS CAD Suite, XRT utilities, Xilinx bootgen, OpenOCD, and openFPGALoader.

Validation

• pytest -q
• docker build -f Dockerfile.dev --build-arg INSTALL_OSS_CAD_SUITE=0 -t svide-dev:test .
• docker build -f Dockerfile.dev -t svide-dev:oss .
• docker run --rm svide-dev:oss bash -lc 'python --version && node --version && npm --version && yosys -V && nextpnr-himbaechel --version 2>&1 | head -1 && iverilog -V 2>&1 | head -1 && verilator --version && command -v bootgen && command -v xbutil && command -v openFPGALoader && pccx-ide check fixtures/ok_module.sv --format text >/tmp/pccx_ok'