Add LiteralFloat to operand_kinds

[rAzoR8]

LiteralFloat was introduced with FPMaxErrorDecorationINTEL, but no entry in operand_kinds corresponds to it. Some codegen tooling might depend on operand_kinds -> category mapping.

This PR adds it with the following "doc" string: "A float consuming one word"
Maybe better wording is necessary.

{
      "category" : "Literal",
      "kind" : "LiteralFloat",
      "doc" : "A float consuming one word"
}

Best,
Fabian

[bashbaug]

LGTM, this is definitely an improvement.

I suppose it's possible in the future this could be "a float consuimg one or more words", similar to "LiteralInteger", if we start supporting 64-bit float literals? I think all "LiteralFloats" are currently 32-bits and hence one word, though.

[bashbaug]

Merging as discussed in the September 20th teleconference.