Added suuport to inject an IOqtaneDatabase in EntityBuilders to allow each Database to control certain Migration behaviors. Also updated Installer to dynamically build Database Configuration section

Oqtane.Database.Sqlite/SqliteDatabase.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Migrations.Operations;
+using Microsoft.EntityFrameworkCore.Migrations.Operations.Builders;
+using Oqtane.Interfaces;
+using Oqtane.Models;
+
+namespace Oqtane.Repository.Databases
+{
+    public class SqliteDatabase : IOqtaneDatabase
+    {
+        public SqliteDatabase()
+        {
+            ConnectionStringFields = new List<ConnectionStringField>()
+            {
+                new() {Name = "Server", FriendlyName = "File Name", Value = "Oqtane-{{Date}}.db"}
+            };
+        }
+
+        public string FriendlyName => Name;
+
+        public string Name => "Sqlite";
+
+        public string Provider => "Microsoft.EntityFrameworkCore.Sqlite";
+
+        public List<ConnectionStringField> ConnectionStringFields { get; }
+
+        public OperationBuilder<AddColumnOperation> AddAutoIncrementColumn(ColumnsBuilder table, string name)
+        {
+            return table.Column<int>(name: name, nullable: false).Annotation("Sqlite:Autoincrement", true);
+        }
+
+        public string BuildConnectionString()
+        {
+            var connectionstring = String.Empty;
+
+            var server = ConnectionStringFields[0].Value;
+
+            if (!String.IsNullOrEmpty(server))
+            {
+                connectionstring = $"Data Source={server};";
+            }
+
+            return connectionstring;
+        }
+
+        public DbContextOptionsBuilder UseDatabase(DbContextOptionsBuilder optionsBuilder, string connectionString)
+        {
+            return optionsBuilder.UseSqlite(connectionString);
+        }
+    }
+}