added isSkill condition authored by Lxlp's avatar Lxlp
## Description
Tests the light level originating from light-emitting blocks at the target location
## Attributes
| Attribute | Aliases | Description | Default |
|-----------|-----------|----------------------------------------------------------------------|---------|
| level | l | The light level range to match | 0 |
## Examples
```yaml
Conditions:
- lightlevelfromblocks{l=10} true
```
```yaml
Conditions:
- lightlevelfromblocks{l=>10} true
```
```yaml
Conditions:
- lightlevelfromblocks{l=1to10} true
```
## Aliases
- [x] blocklightlevel
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