mctpd: add I2C/I3C inventory decorator

[rupasrilekha]

• Added logic to publish I2CDevice and I3CDevice decorator interfaces on each
  MCTP endpoint, using data from i3c-hub-detector.
• Added logic to find the device's bus and address (or PID) from the MCTP
  interface name and the endpoint's physical address.
• Added logic to match the endpoint to an i3c-hub-detector device on bus/address
  for I2C, or bus/PID for I3C.
• This lets downstream services like pldmd resolve the device's LocationCode.

Tested:

xyz.openbmc_project.Inventory.Decorator.I2CDevice interface - - -
.Address property s "0x67" emits-change
.Bus property u 48 emits-change

xyz.openbmc_project.Inventory.Decorator.I3CDevice interface - - -
.Bus property u 1 emits-change
.PID property s "0x20a0168000f" emits-change