[REQ] Required fields in Zapier generator

[chenjr0719]

Is your feature request related to a problem? Please describe.

The current Zapier generator does not include the required field when generate models. All the fields will be optional now.

Describe the solution you'd like

Including the required field based on the document.

Describe alternatives you've considered

Nope

Additional context

The schema of Pet includes two required fields:

openapi-generator/samples/yaml/pet.yml

Lines 148 to 150 in 69fcfef

	required:
	- id
	- name

The current zapier model does not follow it:

openapi-generator/samples/client/petstore/zapier/models/Pet.js

Lines 10 to 19 in d9920a5

	key: `${keyPrefix}id`,
	label: `[${labelPrefix}id]`,
	type: 'number',
	},
	...Category.fields(`${keyPrefix}category`, isInput),
	{
	key: `${keyPrefix}name`,
	label: `[${labelPrefix}name]`,
	type: 'string',
	},

The field schema of zaiper models:
https://zapier.github.io/zapier-platform-schema/build/schema.html#fieldschema

[wing328]

thanks for reporting the issue.

cc @valmoz, @emajo

[emajo]

Thanks, I filed a pr with the fix
PR-17115