Docs request: provide payload for `create_environment`

[bbrewington]

Here's section in question:

dbtc/docs/guide/cloud.md

Lines 377 to 378 in daf8f15

	### create_environment
	::: dbtc.client.admin._AdminClient.create_environment

And an example section that provides payload

dbtc/docs/guide/cloud.md

Lines 422 to 454 in daf8f15

	### create_environment_variables
	::: dbtc.client.admin._AdminClient.create_environment_variables
	**Examples:**
	=== "Python"
	Assuming that `client` is an instance of `dbtCloudClient`
	```py
	client.cloud.create_environment_variables(account_id, project_id, payload)
	```
	=== "CLI"
	Assuming that `DBT_CLOUD_ACCOUNT_ID` and `DBT_CLOUD_PROJECT_ID`
	environment variables have been set.
	```bash
	dbtc create-credentials --payload='{"env_var": {"name": "DBT_ENV_TEST", "ids": [], "new_name": "DBT_ENV_TEST", "project": "foo", "{{development_environment_name}}": "dev_value", "{{deployment_environment_name}}": "deploy_value"}}'
	```
	=== "Payload"
	```py
	payload = {
	'env_var': {
	'name': 'DBT_ENV_TEST',
	'ids': [],
	'new_name': 'DBT_ENV_TEST',
	'project': 'foo',
	'{{development_environment_name}}': 'dev_value',
	'{{deployment_environment_name}}': 'deploy_value'
	}
	}
	```

I'm trying it out now, so glad to fork/PR an example in if I figure it out, but leaving this here in the meantime

[bbrewington]

Here's keys from an example "get_environment" request I did w/ API v3:

{
  'id',
  'account_id',
  'project_id',
  'credentials_id',
  'extended_attributes_id',
  'name',
  'dbt_version',
  'raw_dbt_version',
  'type',
  'use_custom_branch',
  'custom_branch',
  'supports_docs',
  'state',
  'created_at',
  'updated_at',
  'project',
  'jobs',
  'credentials',
  'custom_environment_variables',
  'deployment_type',
  'is_deferrable'
}

[bbrewington]

Tried seeing what are minimum required attributes in payload - basically whack-a-mole w/ create_environment until I stopped getting errors. Learned via below all that's technically required is account_id & project_id

from dbtc import dbtCloudClient

dbt_cloud_client = dbtCloudClient()
account_id = 1234
project_id = 1234

payload = {
  'account_id': account_id,
  'project_id': project_id
}

new_environment = dbt_cloud_client.cloud.create_environment(
  account_id=account_id,
  project_id=project_id,
  payload=payload
)

print(new_environment)

Got an HTTP 201 (Created) response - confirming those two attributes are only ones required. Went to dbt Cloud Audit Log for the account, and found this:

"environment": {
      "id": "1234",
      "name": "New Environment",
      "type": "deployment",
      "updated_at": "1702825003",
      "dbt_version": "1.7.0-latest"
    }