Add pie build mode to all binary builds

[xiaokangwang]

This pull request adds pie build mode support to v2ray binaries for binary hardening.

[database64128]

https://github.com/golang/go/blob/20130cc36a17ba131b80cc8674f1ef8d002e9dbe/src/internal/platform/supported.go#L234-L252

PIE was made default on darwin/amd64 in Go 1.22, leaving Linux as the only remaining popular platform where PIE isn't the default build mode.

I remember reading through an issue where changing the default build mode on Linux to PIE was discussed, but I can't seem to find it right now. I think it's best that we focus on what we are good at, and leave this up for the Go maintainers to decide.

[xiaokangwang]

https://github.com/golang/go/blob/20130cc36a17ba131b80cc8674f1ef8d002e9dbe/src/internal/platform/supported.go#L234-L252

PIE was made default on darwin/amd64 in Go 1.22, leaving Linux as the only remaining popular platform where PIE isn't the default build mode.

I remember reading through an issue where changing the default build mode on Linux to PIE was discussed, but I can't seem to find it right now. I think it's best that we focus on what we are good at, and leave this up for the Go maintainers to decide.

Are you aware the reason why Linux is not PIE by default? The reason I found is that Go developers wish to make sure Go binary is easily debuggable, which does not apply to us in this case.

[xiaokangwang]

I believe the most credible reason pie is not enabled on Linus by default is because it impacts debug support of application, and this is not relevant in our case.