fixes #4 - adds modular analyses system using plugins

app/analysis/base.py

@@ -0,0 +1,11 @@
+from abc import ABC, abstractmethod
+import pandas as pd
+
+class BaseAnalysis(ABC):
+    name = "Base Analysis"
+    description = "This is a base analysis module."
+
+    @abstractmethod
+    def execute(self, df: pd.DataFrame):
+        """Run analysis on the given DataFrame"""
+        pass