Move generated git annotations to sub-directories (#3281)

## Why
These annotations no longer have to be regenerated during code
generation.

## Tests
Manually, by pushing a test commit and seeing the file diffs are not
shown by default on Github.

<img width="1523" height="906" alt="Screenshot 2025-07-21 at 14 19 02"
src="https://github.com/user-attachments/assets/141eea47-1144-4fe5-8dc8-5d92ba3cd11b"
/>

Author: shreyas-goenka

.codegen.json

@@ -23,10 +23,7 @@
         "post_generate": [
             "go test -timeout 240s -run TestConsistentDatabricksSdkVersion github.com/databricks/cli/internal/build",
             "make schema",
-            "make generate-validation",
-            "echo 'bundle/internal/tf/schema/\\*.go linguist-generated=true' >> ./.gitattributes",
-            "echo 'go.sum linguist-generated=true' >> ./.gitattributes",
-            "echo 'bundle/schema/jsonschema.json linguist-generated=true' >> ./.gitattributes",
+            "make generate-validation"
         ]
     }
 }

.gitattributes

@@ -155,7 +155,3 @@ cmd/workspace/warehouses/warehouses.go linguist-generated=true
 cmd/workspace/workspace-bindings/workspace-bindings.go linguist-generated=true
 cmd/workspace/workspace-conf/workspace-conf.go linguist-generated=true
 cmd/workspace/workspace/workspace.go linguist-generated=true
-bundle/internal/tf/schema/\*.go linguist-generated=true
-go.sum linguist-generated=true
-bundle/schema/jsonschema.json linguist-generated=true
-bundle/internal/validation/generated/required_fields.go linguist-generated=true

bundle/internal/tf/.gitattributes

@@ -0,0 +1 @@
+schema/*.go linguist-generated=true

bundle/schema/.gitattributes

@@ -0,0 +1 @@
+jsonschema.json linguist-generated=true