[Fabric] Add controller kernel to sync the producers

[aagarwalTT]

Ticket

Link to Github Issue

Problem description

Currently the producer kernels wait for the signal from host to start transmitting packets. This could cause the workers to transmit the packets in non-overlapping time frames thus impacting perf calculations. This could get as worse as the workers running serially because of fabric not allowing context switch for the slow dispatch commands to go through.

What's changed

Add a new controller kernel that now synchronizes all the producers on the same chip. This kernel now waits for the signal from the host and then noc mcasts the notification to the worker kernels, thus reducing the skew to the order of 10s of cycles. This kernel can be extended to setup other handshakes in the future as well.

Checklist

• All post commit CI passes
• Blackhole Post commit CI passes (if applicable)
• Model regression CI passes (if applicable)
• Device performance regression CI passes (if applicable)
• (For models and ops writers) Full new models tests CI passes (if applicable)
• New/Existing tests provide coverage for changes