Add release train infrastructure

Closes gh-37097

.github/actions/release-train-build/action.yml

@@ -0,0 +1,7 @@
+name: Build Release
+runs:
+  using: composite
+  steps:
+    - name: Build Release
+      shell: bash
+      run:  ./gradlew -PdeploymentRepository=$(pwd)/deployment-repository publishAllPublicationsToDeploymentRepository

.github/actions/release-train-build/deployment-spec.yml

@@ -0,0 +1,16 @@
+artifactory:
+  artifacts:
+    - pattern: "/**/framework-api-*.zip"
+      properties:
+        zip.deployed: "false"
+        zip.name: "spring-framework"
+    - pattern: "/**/framework-api-*-docs.zip"
+      properties:
+        zip.type: "docs"
+    - pattern: "/**/framework-api-*-schema.zip"
+      properties:
+        zip.type: "schema"
+maven-central:
+  excludes:
+    - "org/springframework/framework-api/**"
+    - "org/springframework/framework-docs/**"

.github/actions/release-train-test/action.yml

@@ -0,0 +1,7 @@
+name: Test Release
+runs:
+  using: composite
+  steps:
+    - name: Test Release
+      shell: bash
+      run:  ./gradlew check