Refactor entire codebase and rewrite documentation

Sources/DataLiteCore/Protocols/SQLiteBindable.swift

@@ -0,0 +1,42 @@
+import Foundation
+
+/// A protocol whose conforming types can be used in SQLite statements and queries.
+///
+/// Conforming types provide a raw SQLite value for binding to prepared-statement parameters
+/// and an SQL literal that can be inserted directly into SQL text.
+///
+/// ```swift
+/// struct Device: SQLiteBindable {
+///     var model: String
+///
+///     var sqliteValue: SQLiteValue {
+///         return .text(model)
+///     }
+/// }
+/// ```
+///
+/// ## Topics
+///
+/// ### Instance Properties
+///
+/// - ``sqliteValue``
+/// - ``sqliteLiteral``
+public protocol SQLiteBindable {
+    /// The raw SQLite value representation.
+    ///
+    /// Supplies a value compatible with SQLite's internal representation. Used when binding
+    /// conforming types to parameters of a prepared SQLite statement.
+    var sqliteValue: SQLiteValue { get }
+    
+    /// The SQL literal representation.
+    ///
+    /// Provides a string that conforms to SQL syntax and is compatible with SQLite's rules
+    /// for literals. Defaults to ``SQLiteValue/sqliteLiteral``.
+    var sqliteLiteral: String { get }
+}
+
+public extension SQLiteBindable {
+    var sqliteLiteral: String {
+        sqliteValue.sqliteLiteral
+    }
+}