Add automation checks for tags and improve version output

[MetalBlueberry]

I noticed I made the mistake to forget to set the version variable correctly.

This changes aim to fail a the tag pipeline when it happens, so developers can realize that something is wrong.

It also adds build info to the binary, which will help to find the actual build environment even if the version string was not updated by mistake.

It looks like this

╰─>$ timescaledb-parallel-copy --version  
        -buildmode: exe
        -compiler: gc
        DefaultGODEBUG: asynctimerchan=1,gotypesalias=0,httplaxcontentlength=1,httpmuxgo121=1,httpservecontentkeepheaders=1,tls10server=1,tls3des=1,tlskyber=0,tlsrsakex=1,tlsunsafeekm=1,winreadlinkvolume=0,winsymlink=0,x509keypairleaf=0,x509negativeserial=1
        CGO_ENABLED: 1
        CGO_CFLAGS: 
        CGO_CPPFLAGS: 
        CGO_CXXFLAGS: 
        CGO_LDFLAGS: 
        GOARCH: amd64
        GOOS: linux
        GOAMD64: v1
        vcs: git
        vcs.revision: 27507a2684eb15633b903b0ee1ebb7684bc7e29e
        vcs.time: 2025-01-13T09:02:21Z
        vcs.modified: true
timescaledb-parallel-copy 0.8.0 [go1.23.4] (linux amd64)