Add whisper.cpp examples

[thixotropist]

Add a set of survey data from the whisper.cpp example plus the framing context to show its relationship to the existing dpdk example.

Initial notes:

• whisper.cpp uses a lot of vector math, so it is a good example of how GCC will autovectorize vector processing.
• whisper.cpp uses a lot of 16 bit floating point math, but not in a way that RISC-V processors supporting one of the two common 16 bit floating point formats can yet use. This is likely to change dramatically.
• whisper.cpp includes explicit RISC-V vector instrinsic C source code - but this code is not necessarily better than that produced by GCC's autovectorizer. The microarchitecture choices have a large impact on the generated instructions.