Make a JSON file to collect and pass main parameters

It might be helpful for the script if the most important parameters were collected and passed through an external JSON file.
E.g., see in `tracer.R`

```r
b_type <- "abs"
b_param <- 10

mw <- 5
step_win <- c(1, 1, 1, -1, -1, -1)
protect <- 200
thr <- 25

w <- 5
```