Prepare Helm chart for Kotlin implementation

Depends on !83 (merged).

• Update Helm Readme file to match latest version (if any changes)
• Update NOTES.txt to explain usage (could refer to updated docs) moved to #261 (closed)
• Move helm directory to top-level

changed milestone to %0.5.0

added Master Project 20/21 Theodolite Kotlin To Do modul/theodolite labels

changed the description

mentioned in merge request !60 (merged)

added In Progress label and removed To Do label

mentioned in merge request !109 (merged)

removed Master Project 20/21 label

marked the checklist item Move helm directory to top-level as completed

changed milestone to %0.6.0

marked the checklist item Update Helm Readme file to match latest version (if any changes) as completed

changed the description

removed milestone %0.6.0

closed