consider using (data) models more widely

[simonkowallik]

Currently pydantic models are only used in the API.
Also the models implementation could be better, for example inheritance isn't used.

Relevant code:

as3ninja/as3ninja/api.py

Lines 21 to 55 in 05dd58a

	class AS3ValidationResult(BaseModel):
	"""AS3 declaration Schema validation result"""
	valid: bool
	error: Optional[str]
	class LatestVersion(BaseModel):
	"""AS3 /schema/latest_version response"""
	latest_version: str
	class Error(BaseModel):
	"""Generic Error Model"""
	code: int
	message: str
	class AS3DeclareGit(BaseModel):
	"""Model for an AS3 Declaration from a Git repository"""
	repository: str
	branch: Optional[str]
	commit: Optional[str]
	depth: int = 1
	template_configuration: Optional[Union[str, List[str]]]
	class AS3Declare(BaseModel):
	"""Model for an inline AS3 Declaration"""
	template_configuration: Union[dict, List[dict]]
	declaration_template: str

An example of relevant code to introduce inheritance:

as3ninja/as3ninja/api.py

Lines 41 to 55 in 05dd58a

	class AS3DeclareGit(BaseModel):
	"""Model for an AS3 Declaration from a Git repository"""
	repository: str
	branch: Optional[str]
	commit: Optional[str]
	depth: int = 1
	template_configuration: Optional[Union[str, List[str]]]
	class AS3Declare(BaseModel):
	"""Model for an inline AS3 Declaration"""
	template_configuration: Union[dict, List[dict]]
	declaration_template: str