6834 Add MetaProterties and update load API (#6835)

Fixes #6834.

### Description
This PR introduces the idea of `BundleManager`, with `get` as one of the
methods, to avoid repeatedly instantiating `ConfigWorkflow`.

**usage**
```
bundle = BundleManager("spleen_ct_segmentation")
bundle.get("network_data_format")

or

bundle.get(property="train_preprocessing")
```

### Types of changes
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [x] Non-breaking change (fix or new feature that would not break
existing functionality).
- [ ] Breaking change (fix or new feature that would cause existing
functionality to change).
- [ ] New tests added to cover the changes.
- [ ] Integration tests passed locally by running `./runtests.sh -f -u
--net --coverage`.
- [ ] Quick tests passed locally by running `./runtests.sh --quick
--unittests --disttests`.
- [ ] In-line docstrings updated.
- [ ] Documentation updated, tested `make html` command in the `docs/`
folder.

---------

Signed-off-by: KumoLiu <yunl@nvidia.com>

Author: KumoLiu

monai/bundle/__init__.py

@@ -13,10 +13,11 @@
 
 from .config_item import ComponentLocator, ConfigComponent, ConfigExpression, ConfigItem, Instantiable
 from .config_parser import ConfigParser
-from .properties import InferProperties, TrainProperties
+from .properties import InferProperties, MetaProperties, TrainProperties
 from .reference_resolver import ReferenceResolver
 from .scripts import (
     ckpt_export,
+    create_workflow,
     download,
     get_all_bundles_list,
     get_bundle_info,

monai/bundle/properties.py

@@ -13,7 +13,7 @@
 to interact with the bundle workflow.
 Some properties are required and some are optional, optional properties mean: if some component of the
 bundle workflow refer to the property, the property must be defined, otherwise, the property can be None.
-Every item in this `TrainProperties` or `InferProperties` dictionary is a property,
+Every item in this `TrainProperties` or `InferProperties` or `MetaProperties` dictionary is a property,
 the key is the property name and the values include:
 1. description.
 2. whether it's a required property.
@@ -48,6 +48,11 @@
         BundleProperty.REQUIRED: True,
         BundlePropertyConfig.ID: f"train{ID_SEP_KEY}trainer",
     },
+    "network_def": {
+        BundleProperty.DESC: "network module for the training.",
+        BundleProperty.REQUIRED: False,
+        BundlePropertyConfig.ID: "network_def",
+    },
     "max_epochs": {
         BundleProperty.DESC: "max number of epochs to execute the training.",
         BundleProperty.REQUIRED: True,
@@ -216,3 +221,42 @@
         BundlePropertyConfig.REF_ID: f"evaluator{ID_SEP_KEY}key_val_metric",
     },
 }
+
+MetaProperties = {
+    "version": {
+        BundleProperty.DESC: "bundle version",
+        BundleProperty.REQUIRED: True,
+        BundlePropertyConfig.ID: f"_meta_{ID_SEP_KEY}version",
+    },
+    "monai_version": {
+        BundleProperty.DESC: "required monai version used for bundle",
+        BundleProperty.REQUIRED: True,
+        BundlePropertyConfig.ID: f"_meta_{ID_SEP_KEY}monai_version",
+    },
+    "pytorch_version": {
+        BundleProperty.DESC: "required pytorch version used for bundle",
+        BundleProperty.REQUIRED: True,
+        BundlePropertyConfig.ID: f"_meta_{ID_SEP_KEY}pytorch_version",
+    },
+    "numpy_version": {
+        BundleProperty.DESC: "required numpy version used for bundle",
+        BundleProperty.REQUIRED: True,
+        BundlePropertyConfig.ID: f"_meta_{ID_SEP_KEY}numpy_version",
+    },
+    "description": {
+        BundleProperty.DESC: "description for bundle",
+        BundleProperty.REQUIRED: False,
+        BundlePropertyConfig.ID: f"_meta_{ID_SEP_KEY}description",
+    },
+    "spatial_shape": {
+        BundleProperty.DESC: "spatial shape for the inputs",
+        BundleProperty.REQUIRED: False,
+        BundlePropertyConfig.ID: f"_meta_{ID_SEP_KEY}network_data_format{ID_SEP_KEY}inputs{ID_SEP_KEY}image"
+        f"{ID_SEP_KEY}spatial_shape",
+    },
+    "channel_def": {
+        BundleProperty.DESC: "channel definition for the prediction",
+        BundleProperty.REQUIRED: False,
+        BundlePropertyConfig.ID: f"_meta_{ID_SEP_KEY}network_data_format{ID_SEP_KEY}outputs{ID_SEP_KEY}pred{ID_SEP_KEY}channel_def",
+    },
+}