Adding Remote hw_target support in Vivado backend with 'hw_server_url' tool option.

[faberc]

Added support for 'hw_server_url' tool option for Vivado backend, which takes the string (url and port) provided and passes it to the 'connect_hw_server' command in the program.tcl template with the "-url" tag, outputting the following command: connect_hw_server -url <hw_server_url> if the hw_server_url is provided as a tool option for target.

[olofk]

Completely missed this one. Sorry about that. Patch looks fine, but since you added this we have moved to a new API in Edalize called the Flow API. The changes would need to be in https://github.com/olofk/edalize/blob/main/edalize/tools/vivado.py and https://github.com/olofk/edalize/blob/main/edalize/tools/templates/vivado/vivado-program.tcl.j2