add netcore 3.1 app for DatabaseManager

1. add netcore 3.1 app for DatabaseManager
2. fix some ui issues

copy table

1. copy/clone table
2. fix db connection profile edit issue

diagnose database

1. fix table designer user defined data type for sqlserver
2. add database diagnosis

fix datatype parse; add database backup

1. fix datatype parse: oracle interval, mysql timestamp, sqlserver time
2. add database backup feature

add use ssl option for mysql connection

1.0.7

update nuget package version

retain sql comment when run script in query editor

retain comment when run scripts: view, function, procedure, trigger

bug fix for index, sql parser and bulkcopy

1. fix mysql and oracle index create script error
2. fix bulkcopy: only one table data copied
3. enhance pivot parse
4. fix function translate issue: miss declare for plsql to tsql
5. sort table columns before convert db schema

add table designer

1. add table designer
2. add pivot parse

fix sqlbulkcopy issue

1. fix sqlbulkcopy issue: guid to sqlserver, decimal of mysql and number of oracle
2. move generate script code from dbinterpreter to new class

define data type specifications

1. define datatype specification and redefine datatype mappings
2. fix sql parse issues