Generate impl EntityTable<XxxAnyHolder>

[termoshtt]

Resolve #134

[termoshtt]

EntityTable in ruststep/test works well. This part has been split into #136, and this PR focus to ap201

[termoshtt]

running 2 tests
test get_owned_any ... FAILED
test get_owned ... FAILED

failures:

---- get_owned_any stdout ----
thread 'get_owned_any' panicked at 'called `Result::unwrap()` on an `Err` value: DeserializeFailed("invalid length 3, expected COLOUR_RGB")', ruststep/tests/ap201.rs:14:6
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

---- get_owned stdout ----
thread 'get_owned' panicked at 'called `Result::unwrap()` on an `Err` value: DeserializeFailed("invalid length 3, expected COLOUR_RGB")', ruststep/tests/ap201.rs:14:6


failures:
    get_owned
    get_owned_any

Codes itself has been generated, but it fails deserialize

[termoshtt]

Currently, ap201.rs is following:

    #[derive(
        Debug, Clone, PartialEq, :: derive_new :: new, Holder, AsRef, AsMut, Deref, DerefMut,
    )]
    # [holder (table = Tables)]
    # [holder (field = colour_rgb)]
    #[holder(generate_deserialize)]
    pub struct ColourRgb {
        #[as_ref]
        #[as_mut]
        #[deref]
        #[deref_mut]
        #[holder(use_place_holder)]
        pub colour_specification: ColourSpecification,
        pub red: f64,
        pub green: f64,
        pub blue: f64,
    }

this corresponds to its EXPRESS definition:

  ENTITY colour_rgb
    SUBTYPE OF (colour_specification);
      red   : REAL;
      green : REAL;
      blue  : REAL;
    WHERE
      wr1: (0 <= red) AND (red <= 1);
      wr2: (0 <= green) AND (green <= 1);
      wr3: (0 <= blue) AND (blue <= 1);
  END_ENTITY; -- colour_rgb

The error

thread 'get_owned' panicked at 'called `Result::unwrap()` on an `Err` value: DeserializeFailed("invalid length 3, expected COLOUR_RGB")', ruststep/tests/ap201.rs:14:6

is correct, it should be error.

[termoshtt]

#134 has been fixed while debugging code generation around Any.