Python: Add Agent Framework Lab Lightning package with RL training examples (#937)

* add math agent

* .

* update

* update debug mode

* add tau2 training

* .

* .

* .

* .

* add tests

* .

* revert observability

* update readme

* fix task serialization issue

* fix exception

* add inline docs

* update readme

* update pyproject toml

* minor fix

* update and use git lfs

* update

* update ignore file to use lab specific

* fix type

* update depedency

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Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

.gitignore

@@ -198,13 +198,4 @@ temp*/
 .tmp/
 .temp/
 
-# GAIA data directories
-data_gaia_hub/
-**/data_gaia_hub/
-python/packages/lab/gaia/**/*.jsonl
-
-# TAU2 data directories
-python/packages/lab/tau2/**/data/
-python/packages/lab/tau2/**/results/
-
 agents.md