feat: add library icons

backend/src/chitai/database/models/library.py

@@ -17,6 +17,7 @@ class Library(BigIntAuditBase, SlugKey):
     # Which structure to save the files in the filesystem (i.e {author_name}/{title}.{ext})
     path_template: Mapped[str]  
     description: Mapped[Optional[str]]
+    icon: Mapped[str] = mapped_column(default="library")
     read_only: Mapped[bool] = mapped_column(nullable=False, default=False)
 
     books: Mapped[list["Book"]] = relationship(back_populates="library")

backend/src/chitai/schemas/library.py

@@ -8,6 +8,7 @@ class LibraryCreate(BaseModel):
     root_path: str
     path_template: str | None = "{author}/{title}"
     description: str | None = None
+    icon: str = "library"
     read_only: bool = False
 
     @computed_field
@@ -21,6 +22,7 @@ class LibraryRead(BaseModel):
     root_path: str
     path_template: str
     description: str | None
+    icon: str
     read_only: bool
     total: int | None = None
 
@@ -30,4 +32,5 @@ class LibraryUpdate(BaseModel):
     root_path: str | None
     path_template: str | None
     description: str | None
+    icon: str | None
     read_only: bool | None