analyze_logs: introduce LogProvider trait

Cargo.lock

@@ -465,6 +465,18 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "enum_dispatch"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f33313078bb8d4d05a2733a94ac4c2d8a0df9a2b84424ebf4f33bfc224a890e"
+dependencies = [
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "env_filter"
 version = "0.1.0"
@@ -1390,9 +1402,9 @@ dependencies = [
 name = "refraction"
 version = "2.0.0"
 dependencies = [
- "async-trait",
  "color-eyre",
  "dotenvy",
+ "enum_dispatch",
  "env_logger",
  "eyre",
  "gray_matter",