Hardware: add hardware vendors

[RalphHightower]

Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
Add to Hardware.md
Hardware Suppliers:
| NVIDIA Jetson Developer Kits | (H/W) |
| NVIDIA Jetson Modules | (H/W) |
| Jetson Partner Hardware Products | (H/W) |
| Seeed Studio reComputer J101 - Carrier Board for Jetson Nano, same size of NVIDIA® Jetson Nano™ Dev Kit carrier board, micro SD card slot, HDMI2.0, USB, CSI, M.2 key E, GPIO | (H/W) $69 |
| Seeed Studio reComputer J202 - carrier Board for Jetson Nano/Xavier NX/TX2 NX, with 4xUSB, M.2 Key M,E same size of NVIDIA® Jetson Xavier™ NX Dev Kit carrier board (Power adapter included) | (H/W) $139 |

Describe alternatives you've considered
Browser bookmarks.

Additional context
No

[RalphHightower]

#465 closes #459