[feat] add case insensitive search for users (#3413)

Co-authored-by: Arc <33088785+arcbtc@users.noreply.github.com>

lnbits/db.py

@@ -424,6 +424,7 @@ class Operator(Enum):
     LE = "le"
     INCLUDE = "in"
     EXCLUDE = "ex"
+    LIKE = "like"
 
     @property
     def as_sql(self):
@@ -443,6 +444,8 @@ class Operator(Enum):
             return ">="
         elif self == Operator.LE:
             return "<="
+        elif self == Operator.LIKE:
+            return "LIKE"
         else:
             raise ValueError("Unknown SQL Operator")
 
@@ -499,7 +502,7 @@ class Filter(BaseModel, Generic[TFilterModel]):
         return cls(field=field, op=op, values=values, model=model)
 
     @property
-    def statement(self):
+    def statement(self) -> str:
         stmt = []
         for key in self.values.keys() if self.values else []:
             clean_key = key.split("__")[0]
@@ -582,7 +585,10 @@ class Filters(BaseModel, Generic[TFilterModel]):
             for page_filter in self.filters:
                 if page_filter.values:
                     for key, value in page_filter.values.items():
-                        values[key] = value
+                        if page_filter.op == Operator.LIKE:
+                            values[key] = f"%{value}%"
+                        else:
+                            values[key] = value
         if self.search and self.model:
             values["search"] = f"%{self.search.lower()}%"
         return values