Add reuse badge in readme.

[ajinkyapatil8190]

Add reuse badge in readme.

Issue Addressed by this PR

No Bug, just a chore for compliance.

Description

So, as per the OSPO guidelines, we have to make sure that the SAP open source repositories are all compliant - for this I created this PR to mark the compliance to the reuse rule.

Checklist for Pull Requests

• Supplied as many details as possible on this change
• Included the link to the associated Bugzilla issue in the Issue section above
• New code has been formatted using the code formatter
• The code has unit tests where applicable and is easily unit-testable
• This branch is appropriately named for the associated issue, usually bugXXXX

[axeluhl]

@ajinkyapatil8190 does this need to go at the beginning of the file or can it appear anywhere?

[ajinkyapatil8190]

It can be anywhere in the file, but usually all badges are at the beginning of the readme so I kept it like that.
This PR is for compliance with reuse tool as mentioned in the description with the link to the wiki page with OSPO guidelines. @axeluhl

[axeluhl]

LGTM. BTW, @ajinkyapatil8190 why would the tag as seen on https://github.com/ajinkyapatil8190/sailing-analytics/tree/patch-1 show "non-compliant?" How do we find out?