Allow use with other installations of helm

Is your feature request related to a problem? Please describe.

I am using the helm3 plugin/addon of microk8s which is run using microk8s helm3; for easier personal use I just aliased that to helm but run.sh doesn't pick that up causing the datree plugin to not compile the chart which in turn causes a "No files detected" error since this line (specifically helm show chart) fails as the command isn't known:

helm-datree/scripts/run.sh

Line 16 in c4146ef

    
           elif [[ $helm_chart_location == "" && $(helm show chart $1 2> /dev/null | grep apiVersion) == apiVersion* ]]; then

Describe the solution you'd like

Some flag / env variable for the script to provide an alternative path / way of calling helm to allow executing helm that is prebundled with other tools and thus requires a different command to run.

Describe alternatives you've considered

Modifying the installed run.sh file to include the alias at the top of the file locally
Dropping a helm executable somewhere in the path that essentially serves as the alias

Additional context
-

Hi @geisterfurz007,
Thanks a lot for reporting this!
I'm marking this issue as up for grabs

@geisterfurz007
BTW, if you were able to find the issue location and suggest a solution I think you are definitely skilled enough to fix this yourself :)
If you'd like to take this on, please let me know. We can schedule a zoom call and talk about a possible solution

I think I might actually have something in mind; I will try around with it later and open a PR if it works; otherwise I Will gladly come back to the zoom call offer, thanks a lot!