Topic Support for Bot, resolves #649

[KMohZaid]

1. added /setgrouptopic command which admin can use to set/unset group topic for werewolf bot
2. added new column in dbo.Group table : GroupTopicId to store topic id
3. restricts bot command to specified topic only, except admin command and manually allowed command with Attribute AllowOutsideConfiguredTopic

Note : I may have forget some places to update and make topic support

This PR resolves :
#649

[KMohZaid]

this is new PR, as i messed up old one

old PR : #660 (comment)

note that i have squashed those 2 commit :

8abf556f fix(/setgrouptopic): complete TODO 1 and 2, used button for set and unset.
b0ec8681 add(topic support) && update(sql schema)...

• removed TODO description as they are done.
• removed database schema update commit line, i think it can be directly done by someone or a separate PR for schema update

[KMohZaid]

Those 2 TODO are left(but planned, unrelated to this PR) :

3. Remove redundant direct call to Telegram send API and make single method that send normal message or document based on flag parameter such as msg_type: [TEXT,DOC,GIF]
4. A database migrator system, so we can avoid manual database backup and restore

[Olgabrezel]

Hi, thank you for the pull request!
I left some review comments, I think some parts of the design should be improved before we merge this.
If you could take a look at this, it would be highly appreciated!
In case of questions, just comment here, or ask on Support, whichever seems more appropriate!

[Olgabrezel]

(I should note, I have not tried to execute the code to test its functional correctness so far. These are all just my thoughts based on reading it.)

[KMohZaid]

I will work on reviews when I get time. Thank you for feedback

[KMohZaid]

@Olgabrezel check new commit and tell me if there is anything needed to be done

[KMohZaid]

oops, forget to format it to proper indentation