RMS Filter to replace CT Clamp

**Describe the problem you have/What new integration you would like**

Currently trying to use the CT_Clamp component with readings from an external ADC (ADS1115 device connected via I2C), yet think an RMS filter would be more generic. So the config would look like this:
```
sensor:
- platform: ads1115
id: ct1
gain: 4.096
multiplexer: 'A0_GND'
filters:
- offset: -1.658
- rms: 50 # Number of sample to average
- multiply: 90
name: "Current Reading1"
```

**Please describe your use case for this integration and alternatives you've tried:**

**Additional context**