Rename Go module

[0xThiebaut]

Renamed the Go module to allow installation through go install.

Without renaming the module, installation fails given the module name & URL mismatches.

PS C:\Users\user> go install github.com/olafhartong/DefenderHarvester@latest
go: downloading github.com/olafhartong/DefenderHarvester v0.9.8
go: github.com/olafhartong/DefenderHarvester@latest: version constraints conflict:
        github.com/olafhartong/[email protected]: parsing go.mod:
        module declares its path as: defenderharvester
                but was required as: github.com/olafhartong/DefenderHarvester

[olafhartong]

thanks Maxime! :)