Add check for java 11 when building gcp jars and add sbt clean (#233)

## Summary

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

Tested:
```
(dev_chronon) davidhan@Davids-MacBook-Pro: ~/zipline/chronon (davidhan/check_for_java11) $ asdf local java corretto-17.0.13.11.1
(dev_chronon) davidhan@Davids-MacBook-Pro: ~/zipline/chronon (davidhan/check_for_java11) $ asdf reshim java corretto-17.0.13.11.1
j(dev_chronon) davidhan@Davids-MacBook-Pro: ~/zipline/chronon (davidhan/check_for_java11) $ javac --version
javac 17.0.13
(dev_chronon) davidhan@Davids-MacBook-Pro: ~/zipline/chronon (davidhan/check_for_java11) $ python  api/py/ai/chronon/repo/run.py --mode upload --conf production/group_bys/quickstart/purchases.v1 --ds  2023-12-01 --dataproc 
(dev_chronon) davidhan@Davids-MacBook-Pro: ~/zipline/chronon (davidhan/check_for_java11) $ 
(dev_chronon) davidhan@Davids-MacBook-Pro: ~/zipline/chronon (davidhan/check_for_java11) $ bash distribution/build_and_upload_gcp_artifacts.sh canary
Working in /Users/davidhan/zipline/chronon
Building wheel
Failed major version of 17. Expecting java version of at least 11.

```



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

- **New Features**
- Added commands for generating Python code from Thrift files in the
build script.
- Introduced a clean command to prepare the build environment before
assembly tasks.
- Added validation for the existence of the Zipline wheel file after
building.

- **Chores**
	- Updated build configuration to target Java 11 compiler settings.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: david-zlai

build.sbt

@@ -244,6 +244,9 @@ lazy val flink = project
   )
 
 // GCP requires java 11, can't cross compile higher
+
+javacOptions ++= Seq("-source", "11", "-target", "11")
+
 lazy val cloud_gcp = project
   .dependsOn(api % ("compile->compile;test->test"), online, spark % ("compile->compile;test->test"))
   .settings(

distribution/build_and_upload_gcp_artifacts.sh

@@ -24,6 +24,7 @@ if [[ EXPECTED_MINIMUM_MINOR_PYTHON_VERSION -gt MINOR_PYTHON_VERSION ]] ; then
     exit 1
 fi
 
+
 thrift --gen py -out api/py/ api/thrift/common.thrift
 thrift --gen py -out api/py/ api/thrift/api.thrift
 thrift --gen py -out api/py/ api/thrift/observability.thrift
@@ -35,6 +36,7 @@ if [ ! -f "$EXPECTED_ZIPLINE_WHEEL" ]; then
 fi
 
 echo "Building jars"
+sbt clean
 sbt cloud_gcp/assembly
 sbt cloud_gcp_submitter/assembly