Changed type and view naming

[Paebbels]

This PR addresses #10.

• T_... that we use _Interface or Interface for interface types
  Applied change: using _Interface

• T_... that we use something that is understood naturally without a secret decoder ring.
  Applied change: currently, there are no ordinary types in the packages, all are records defining an interface.

• V_... that we use _View or View
  Applied change: using _View

• For ..._In also consider In as suffix (w/o _).
  "In" follows main data flow. Similar thoughts for ...Out

  • Like: I2C_InView vs. I2CViewIn vs. I2CView_In
  • No Like: I2CInView vs. I2C_In_View vs. I2C_View_In

  Applied change: using _InView and _OutView respectively.

• For each interface there shall be a vector of that interface also declared of the form: _Interface_Vector
  Applied change: requirement was already fulfilled

• _PCB vs FPGA Internals
  Applied change: PCB related signals use suffix _PCB, which fabric signal have no suffix.

• Review naming for AddressBus which historically was Master/Initiator and Slave/Target
  Applied change: Different names chooses, if not dictated by the standard itself. If the standard changes naming, these definitions can be changed too.

• AxiAddress should be unsigned.
  Applied change: AXI is not part of this repo yet, will be applied when AXI is uploaded.

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/cc @JimLewis see changes

[Paebbels]

The new style looks much more user friendly and readable.