Update support-docs/README.md for 7 new files in v0.7

[Carrotman42]

This includes documentation for the following files found in part-spec/:

• hardware.json
• ic_io.json
• ic_logic.json
• ic_micro.json
• ic_misc.json
• storage_memory.json
• usbc.json

[Carrotman42]

Note: all of the tedious tables were generated using https://github.com/edatasheets/digital-datasheets/pull/36

[Carrotman42]

OK, I have uploaded some changes - please take a look :)