Adding logical type to conf thrift (#763)

## Summary

Adding a field `LogicalType` to `conf` thrift, and fixing a typo.

## Checklist
- [ ] Added Unit Tests
- [x] Covered by existing CI
- [ ] Integration tested
- [ ] Documentation update



<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Added an optional field for logical type classification to the
configuration in the orchestration service API.

- **Style**
  - Updated a parameter name in a method signature for improved clarity.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: ezvz <[email protected]>

Author: varant-zlai

api/src/main/scala/ai/chronon/api/planner/PlanNode.scala

@@ -43,7 +43,7 @@ object PlanNode {
     .flatMap(tryParsingConf[T])
     .toSeq
 
-  def planConfs[T](cons: Seq[T], planner: Planner[T]): Seq[PlanNode] = ???
+  def planConfs[T](confs: Seq[T], planner: Planner[T]): Seq[PlanNode] = ???
   def generatePlans(compiledFolder: String): Seq[PlanNode] = ???
 
 }

api/thrift/orchestration.thrift

@@ -262,6 +262,7 @@ struct Conf {
     1: optional string name
     2: optional string hash
     3: optional string contents
+    4: optional LogicalType logicalType
 }
 
 struct DiffRequest {