feat(model): add lora config for falcon

Why this PR

prepare for train falcon-7B

[] PR should be in the Naming convention
[x] Assign yourself in to Assigneees
[x] Tag related issues
[x] Constants name should be ALL_CAPITAL, function name should be snake_case, and class name should be CamelCase
[x] complex function/algorithm should have Docstring
[x] 1 PR should not have more than 200 lines changes (Exception for test files). If more than that please open multiple PRs
[x] At least PR reviewer must come from the task's team (model, eval, data)