Significantly rework the ledger fuzzer

* Removes global state, simplifying `executed_actions` in the process.
* Remove the possibility of non-exhaustiveness.
* Now accepts a logger instead of using `debug.print`.
* Replace managed types with unmanaged ones.
* Removes dependency on the c_allocator and fix leaks.
* Parameterize the data folder instead of hardcoding it.

Author: InKryption

src/fuzz.zig

@@ -158,6 +158,6 @@ pub fn main() !void {
         => |run_cmd| try allocators_fuzz.run(gpa, seed, run_cmd),
 
         .ledger,
-        => |run_cmd| try ledger_fuzz.run(seed, run_cmd),
+        => |run_cmd| try ledger_fuzz.run(gpa, .from(logger), seed, sub_data_dir, run_cmd),
     }
 }