fix(modelarmor): Added samples for floor settings

[harshnasitcrest]

Added samples for floor settings

Note:

• Please grant Model Armor Floor Settings Admin permission to the service account used to run tests on this repo in the organisation and folder created for Model Armor.
• These samples need a new/updated env vars in testing projects set to pass
  (MA_FOLDER_ID, MA_ORG_ID), Please set the values by referring to https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/model_armor/snippets/noxfile_config.py#L42-L43

[snippet-bot]

Here is the summary of changes.

You are about to add 6 region tags.

• modelarmor/src/get_folder_floor_settings.php:29, tag modelarmor_get_folder_floor_settings
• modelarmor/src/get_organization_floor_settings.php:29, tag modelarmor_get_organizarion_floor_settings
• modelarmor/src/get_project_floor_settings.php:29, tag modelarmor_get_project_floor_settings
• modelarmor/src/update_folder_floor_settings.php:30, tag modelarmor_update_folder_floor_settings
• modelarmor/src/update_organization_floor_settings.php:30, tag modelarmor_update_organizarion_floor_settings
• modelarmor/src/update_project_floor_settings.php:30, tag modelarmor_update_project_floor_settings

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