[FR]: Add env argument to ts_project

### What is the current behavior?

Currently there is no way to customize the environment variables that are set during the tsc execution.

### Describe the feature

I am attempting to adopt ts_project on my very large Typescript codebase. In order to use `tsc` without running out of memory, we need to use the `--max-old-space-size` on the node process. ts_project does not currently provide a way to do this. I propose adding an `env` option to ts_project that gets passed though to the underlying action run.

Currently, our setup looks like this:
```
typescript_bin.tsc(
name = "src_transpiled",
args = [
"-p",
"tsconfig.json",
],
chdir = package_name(),
out_dirs = ["dist"],
srcs = glob([
"src/**/*"
]) + [
"tsconfig.json",
],
env = {
"NODE_OPTIONS": "--max-old-space-size=10240",
},
visibility = ["//visibility:public"],
)

```

Start by locating the ts_project implementation and the underlying action invocation referenced in the issue. Add the env option so values such as NODE_OPTIONS reach the tsc execution, then verify that a ts_project target can customize its environment without changing existing behavior.

Written by the indexing model from the issue text.