vault agent memory usage

[Zetanova]

Is your feature request related to a problem? Please describe.
I am trying to run vault agent in a low resource environment
vault agent requires already 134MB res. memory, for the simple task to renew a token.
This is because the hole executable gets loaded into memory.

Describe the solution you'd like
build a separate executable for vault-agent, vault-cli
The current executable that includes all modules does not to be changed.

Describe alternatives you've considered
Writing my own batch script and "template engine"

Explain any additional use-cases
vault-cli could reduce the mem footprint too.

Additional context
Most likely the server code makes the bulk of the size