Standalone http server support

[mukuldeepfence]

This PR adds the option to start the YaraHunter as a HTTP server in standalone mode, i.e. doesn't need console to perform the scans.

Adds new flag **`-standalone-http-port`**
Returns secret scan result in API(/malware-scan) response

Note - here using docker extension we will be scanning only one image in one request

Why is this PR needed?
Enabling the support to run YaraHunter as standalone service also allows this to be integrated with several other platforms like Docker extension

ref issue - #30

[deviprasad303]

mukul stash these changes all these are already done in a seperate branch yarahuntergrpcserver i will merge them to this branch

[mukuldeepfence]

Hi @deviprasad303 , these changes are different, i have used yarahuntergrpcserver as a base branch

[ibreakthecloud]

way too much commits, please rebase with main before merging