Expand testing

[andersfugmann]

This pull request includes a series of changes primarily focused on improving the benchmarking process and modifying the deserialization process in the OCaml Protoc Plugin. The main changes include adding a new test function for integer tests, increasing the benchmark quota, adding a new empty.proto file, and making significant changes to the deserialize.ml and deserialize.mli files.

Benchmarking improvements:

• Makefile: Modified the bench command to include a --profile=bench option, enhancing the benchmarking process.
• bench/bench.ml: Added a new function make_int_tests for integer tests and increased the benchmark quota from 1.0 to 5.0 seconds. Also, added a make_tests call for the Protoc.Empty module. [1] [2] [3]

Additions to the codebase:

• bench/empty.proto: Added a new empty.proto file.
• bench/plugin/dune and bench/protoc/dune: Modified to include empty.ml in the targets and ../empty.proto in the dependencies. [1] [2]
• dune-workspace: Added new ocamlopt_flags for the bench environment.

Changes to the deserialization process:

• src/ocaml_protoc_plugin/deserialize.ml and src/ocaml_protoc_plugin/deserialize.mli: Made significant changes to the deserialization process, including modifying the value function, adding new functions like extension_ranges, deserialize_fast, and deserialize_full, and modifying the deserialize function. These changes aim to improve the efficiency and flexibility of the deserialization process. [1] [2] [3] [4] [5] [6] [7]

[andersfugmann]

Copilot generate summary, which is actually not too bad :-)

I'd add that the PR refactors deserialization and extends testing to test both fast and full deserialization though use of the test lib, by doing dependency injection.

Benchmarks are also updated to test serialization and deserialization of empty messages and some other tuning

[andersfugmann]

Closing as developement has moved to https://github.com/andersfugmann/ocaml-protoc-plugin