Wildcard support on "ltsv_schema"

[pdepaepe]

Hello,

I think it can make sense to have such support:

Given

[input.ltsv_suffixes]
 f64  = "_double"
 i64  = "_int"
 bool = "_bool"

Such schema will helps

[input.ltsv_schema]
 *_int = "i64"
 *_double = "double"
 *_bool = "bool"