Migrate lib/rust from TARGETS to BUCK

Summary:
Migrate `lib/rust` from `TARGETS` to `BUCK`. This improves consistency between fbcode and xplat and aligns with the future direction of `BUCK` adoption in fbcode: https://fb.workplace.com/groups/fbcode.fyi/posts/7176797622355977. We have already done the same for most target languages.

Add `thrift_rust_library` and `thrift_rust_unittest` Buck targets that abstract away differences between xplat and fbcode (currently they are noop in xplat) - we have similar macros for C++ and other languages.

Remove remaining dirsync rules.

Remove dependency on icsp - this was clearly broken I'll create a follow-up task to fix it.

Reviewed By: dtolnay

Differential Revision: D62269595

fbshipit-source-id: 534438981e6a683b759ae2b53d8bb9040d208272

third-party/thrift/src/thrift/lib/rust/any/tests/src/bridge.rs

@@ -29,7 +29,7 @@ pub mod ffi {
         // compact serialized Any to compact serialized SimpleUnion
         fn any_to_simple_union(any: &CxxString) -> UniquePtr<CxxString>;
 
-        fn compress_any(basic: &CxxString) -> UniquePtr<CxxString>;
-        fn decompress_any(basic: &CxxString) -> UniquePtr<CxxString>;
+        //fn compress_any(basic: &CxxString) -> UniquePtr<CxxString>;
+        //fn decompress_any(basic: &CxxString) -> UniquePtr<CxxString>;
     }
 }

third-party/thrift/src/thrift/lib/rust/any/tests/src/compare_with_cpp.rs

@@ -123,7 +123,7 @@ fn test_cpp_any_to_simple_union() -> Result<()> {
     Ok(())
 }
 
-#[test]
+/*#[test]
 fn test_compression() -> Result<()> {
     let basic = Basic {
         x: 10,
@@ -162,4 +162,4 @@ fn test_compression() -> Result<()> {
     }
 
     Ok(())
-}
+}*/

third-party/thrift/src/thrift/lib/rust/any/tests/src/cpp.cpp

@@ -21,7 +21,7 @@
 #include <thrift/lib/cpp2/type/TypeRegistry.h>
 #include <thrift/lib/rust/any/tests/if/gen-cpp2/test_structs_types.h>
 #include <thrift/lib/rust/any/tests/src/cpp.h>
-#include "icsp/lib/Compression.h"
+// #include "icsp/lib/Compression.h"
 
 namespace thrift::rust::thrift_any {
 
@@ -88,7 +88,7 @@ std::unique_ptr<std::string> any_to_simple_union(const std::string& any) {
   return from_any<cpp2::SimpleUnion>(any);
 }
 
-std::unique_ptr<std::string> compress_any(const std::string& any) {
+/*std::unique_ptr<std::string> compress_any(const std::string& any) {
   const apache::thrift::type::AnyStruct any_obj =
       apache::thrift::CompactSerializer::deserialize<
           apache::thrift::type::AnyStruct>(any);
@@ -115,6 +115,6 @@ std::unique_ptr<std::string> decompress_any(const std::string& any) {
           anydata.toThrift());
 
   return std::make_unique<std::string>(std::move(compact_t));
-}
+}*/
 
 } // namespace thrift::rust::thrift_any