Added support deprecated extension for enum values.

[altro3]

Added support primitive types in enum values
Fixes for numeric type generating.

See: OpenAPITools/openapi-generator#19615

Also added supprot custom types / formats for java primitives:

Primitive type char:

schema:
  type: char

Primitive type byte:

schema:
  type: byte

Object type Byte:

schema:
  type: integer
  format: int8 # or byte

Primitive type short:

schema:
  type: short

Object type Short:

schema:
  type: integer
  format: int16 # or short