replace use of `String` to store IDs with `Ulid`

[de-sh]

1. parseable/src/correlation.rs

   Line 152 in 6c5f2aa

   pub id: String,

2. parseable/src/handlers/http/modal/mod.rs

   Line 172 in 6c5f2aa

   pub ingestor_id: String,

3. parseable/src/users/filters.rs

   Line 52 in 6c5f2aa

   pub id: String,

4. parseable/src/users/dashboards.rs

   Line 38 in 6c5f2aa

   pub tile_id: Option<String>,

5. parseable/src/users/dashboards.rs

   Line 103 in 6c5f2aa

   pub dashboard_id: Option<String>,

6. More...
   refer https://docs.rs/ulid/1.1.4/ulid/struct.Ulid.html

[AkhilKamath]

I would like to work on this, can I be assigned? @nitisht

[de-sh]

Hi @AkhilKamath, feel free to join our slack if you want to discuss this further