add lin reg and markov chains to gitignore

.gitignore

@@ -20,4 +20,10 @@ src/financial_news_bot.egg-info/
 # Ignore logs
 logs/
 # ML model files
-ml_models/
+ml_models/
+# Ignore hmm result files
+hmm_results/
+# Ignore linear regression (temporary)
+src/core/linear_regression/
+# Ignore markov chains (temporary)
+src/core/markov_chains/

pyproject.toml

@@ -66,6 +66,9 @@ dependencies = [
     "dotenv>=0.9.9",
     "keras>=3.11.2",
     "tensorflow>=2.20.0",
+    "hmmlearn>=0.3.3",
+    "xgboost>=3.1.1",
+    "optuna>=4.5.0",
 ]
 
 [build-system]