Rollup merge of #149554 - mati865:build-manifest-more-gen, r=Mark-Simulacrum

build-manifest: generate MSI and MINGW arrays from rustc

An alternative to rust-lang/rust#149503

The arrays after generating:
```
❯ bat -n build/x86_64-unknown-linux-gnu/stage2-tools/x86_64-unknown-linux-gnu/release/build/build-manifest-e0236666c7c4187b/out/targets.rs | rg MSI -A14
 136 static MSI_INSTALLERS: &[&str] = &[
 137     "aarch64-pc-windows-gnullvm",
 138     "aarch64-pc-windows-msvc",
 139     "i686-pc-windows-gnu",
 140     "i686-pc-windows-msvc",
 141     "x86_64-pc-windows-gnu",
 142     "x86_64-pc-windows-gnullvm",
 143     "x86_64-pc-windows-msvc",
 144 ];
 145 static MINGW: &[&str] = &[
 146     "aarch64-pc-windows-gnullvm",
 147     "i686-pc-windows-gnu",
 148     "x86_64-pc-windows-gnu",
 149     "x86_64-pc-windows-gnullvm",
 150 ];
```

r? ```@Mark-Simulacrum```