feat(template-generator): add TOML template generation function and our first example

[Arseni10Lk]

Description of Changes:

Closes #21

This PR implements the backend vehicle template generator and assembly subsystem for the YAADO CLI (Terminal/Assembly/), resolves the "default parameters" dilemma via schema-embedded examples, and adds realistic reference configurations based on flight-proven hardware (AGM-84 Harpoon).

1. Vehicle Assembly & Template Generator (Terminal/Assembly/)

• VehicleTemplateGenerator Class (Terminal/Assembly/template_generator.py):
  • generate_template(name, component_classes, pre_filled=False): Generates and writes vehicle TOML configs directly into Hangar/<name>/<name>.toml.
  • Pre-filled Mode (pre_filled=True): Dynamically inspects Pydantic schemas and instantiates components using embedded field_info.examples. Yields an immediately runnable, physically consistent baseline configuration for interactive studies and demos.
  • Production Skeleton Mode (pre_filled=False): Uses Pydantic's model_construct() to scaffold a blank template structure without tripping validation errors, allowing users to manually fill in parameters.
  • assemble_vehicle(name, components): Type-checks and routes instantiated components into their appropriate subsystem dictionaries (aero_surfaces, bodies, propulsion, or mass_properties) on BaseVehicleConfig.
  • prefill_component_values(component_class): Dynamically reflects on component schema fields to populate instances from examples.
• Module Documentation (Terminal/Assembly/README.md):
  • Fully documents the architecture, the "Physics-Owned Fallback" pattern, and the 3 interactive CLI prompt scenarios (full custom prompt, skip all, per-field skip).

2. ComponentStore Examples & Class Tuples (YAADO_Core/ComponentStore/)

Injected real-world specifications as examples=[...] into Field() definitions across all components

3. Hangar & Git Tracking (.gitignore, Hangar/examples/)

• Updated .gitignore to allow committing reference configurations in Hangar/examples/ while creating ignore rules for private user configurations in Hangar/*.
• Added verified reference template: Hangar/examples/AGM-84_HARPOON/AGM-84_HARPOON.toml.

Remaining Tasks:

• All components have examples for each field
• The functionality to skip one field is neatly defined in a separate method for future use
• Test suite expanded

Verification method:
What did you do to verify that everything works as expected?
Generated two examples