Rename databricks.sdk.errors.mapping to `databricks.sdk.errors.plat…

…form` (#522)

`databricks.sdk.errors.mapping.ResourceDoesNotExist: Path
(/Users/serge.smertin@databricks.com/.vMj0/state.json) doesn't exist.`
is not as clear as `databricks.sdk.errors.platform.ResourceDoesNotExist:
...`, where it's obvious errors are coming from the Databricks Platform.

<img width="807" alt="image"
src="https://github.com/databricks/databricks-sdk-py/assets/259697/390b8dc0-649d-44ce-89c1-4f36ef2e06ec">

.codegen.json

@@ -8,7 +8,7 @@
   },
   "batch": {
     ".codegen/__init__.py.tmpl": "databricks/sdk/__init__.py",
-    ".codegen/error_mapping.py.tmpl": "databricks/sdk/errors/mapping.py"
+    ".codegen/error_mapping.py.tmpl": "databricks/sdk/errors/platform.py"
   },
   "samples": {
     ".codegen/example.py.tmpl": "examples/{{.Service.SnakeName}}/{{.Method.SnakeName}}_{{.SnakeName}}.py"

databricks/sdk/errors/__init__.py

@@ -1,4 +1,4 @@
 from .base import DatabricksError, ErrorDetail
 from .mapper import error_mapper
-from .mapping import *
+from .platform import *
 from .sdk import *

databricks/sdk/errors/mapper.py

@@ -1,18 +1,18 @@
-from databricks.sdk.errors import mapping
+from databricks.sdk.errors import platform
 from databricks.sdk.errors.base import DatabricksError
 
 
 def error_mapper(status_code: int, raw: dict) -> DatabricksError:
     error_code = raw.get('error_code', None)
-    if error_code in mapping.ERROR_CODE_MAPPING:
+    if error_code in platform.ERROR_CODE_MAPPING:
         # more specific error codes override more generic HTTP status codes
-        return mapping.ERROR_CODE_MAPPING[error_code](**raw)
+        return platform.ERROR_CODE_MAPPING[error_code](**raw)
 
-    if status_code in mapping.STATUS_CODE_MAPPING:
+    if status_code in platform.STATUS_CODE_MAPPING:
         # more generic HTTP status codes matched after more specific error codes,
         # where there's a default exception class per HTTP status code, and we do
         # rely on Databricks platform exception mapper to do the right thing.
-        return mapping.STATUS_CODE_MAPPING[status_code](**raw)
+        return platform.STATUS_CODE_MAPPING[status_code](**raw)
 
     # backwards-compatible error creation for cases like using older versions of
     # the SDK on way never releases of the platform.