cr fails if chart has local dependency

## issue
```
charts
|- chart1
|- charts
|- sub-chart1 -> ../../../sub-chart1
|- sub-chart1
```

In this case the `ct lint` requires that the `Chart.yaml` for `chart1` have an entry for `dependencies` such as:

```
dependencies:
- name: sub-chart1
version: ">= 0.0.0 || >= 0.0.0-0"
```

Problem is when I try to run `cr package chart/chart1` i get:
```
Error: could not find protocol handler for:
```

## workaround
if i run a `helm dependency update` first then it generates a Chart.lock file and then the `cr package` passes

## ask
make it so `cr package` works for local dependencies without a Chart.lock file (or generate the lock file as part of the process if needed)