Implement field selection optimizer

PiperOrigin-RevId: 974710448

Author: l46kok

optimizer/optimizers/BUILD.bazel

@@ -19,3 +19,8 @@ java_library(
     name = "inlining",
     exports = ["//optimizer/src/main/java/dev/cel/optimizer/optimizers:inlining"],
 )
+
+java_library(
+    name = "select_optimizer",
+    exports = ["//optimizer/src/main/java/dev/cel/optimizer/optimizers:select_optimizer"],
+)

optimizer/src/main/java/dev/cel/optimizer/CelOptimizationException.java

@@ -17,6 +17,10 @@
 /** Checked exception thrown by CelOptimizer during AST optimization. */
 public final class CelOptimizationException extends Exception {
 
+  public CelOptimizationException(String message) {
+    super(message);
+  }
+
   public CelOptimizationException(String message, Throwable cause) {
     super(message, cause);
   }

optimizer/src/main/java/dev/cel/optimizer/optimizers/BUILD.bazel

@@ -111,6 +111,44 @@ java_library(
     ],
 )
 
+java_library(
+    name = "select_optimizer",
+    srcs = [
+        "SelectOptimizer.java",
+    ],
+    tags = [
+    ],
+    deps = [
+        "//:auto_value",
+        "//bundle:cel",
+        "//checker:standard_decl",
+        "//common:cel_ast",
+        "//common:cel_descriptor_util",
+        "//common:cel_descriptors",
+        "//common:cel_source",
+        "//common:compiler_common",
+        "//common:mutable_ast",
+        "//common/ast",
+        "//common/ast:expr_factory",
+        "//common/ast:mutable_expr",
+        "//common/internal:cel_descriptor_pools",
+        "//common/navigation:common",
+        "//common/navigation:mutable_navigation",
+        "//common/types",
+        "//common/types:cel_types",
+        "//common/types:type_providers",
+        "//common/values",
+        "//common/values:cel_byte_string",
+        "//optimizer:ast_optimizer",
+        "//optimizer:mutable_ast",
+        "//optimizer:optimization_exception",
+        "@maven//:com_google_errorprone_error_prone_annotations",
+        "@maven//:com_google_guava_guava",
+        "@maven//:com_google_protobuf_protobuf_java",
+        "@maven//:org_jspecify_jspecify",
+    ],
+)
+
 java_library(
     name = "default_optimizer_constants",
     srcs = [