[FEATURE]: Add more metadata about Capture

[mertssmnoglu]

Is your feature request related to a problem? Please describe.
Our current metadata endpoint only returns Version and GIN Mode. It's limited.

Describe the solution you'd like
We can extend the metadata, I can provide these datas with go build ldflags at compile time.

• Build Commit
• Commit Date
• Compiled at Timestamp
• Git Tag