Added snippets to create common SQL objects (#1)

Added snippets to create common SQL objects like tables, stored-procedures, user-defined functions..etc

## Changes
- Added snippet for table creation
- Added snippet for view creation
- Added snippet for scalar/table valued functions creation
- Added snippet for procedure creation
- Added snippet for DML triggers creation (`INSERT`, `UPDATE`, `DELETE`)
- Added snippet for comment block

Author: kinnell

snippets/functions.cson

@@ -0,0 +1,53 @@
+'.source.sql':
+  'Create Scalar-Valued User-Defined Function (UDF)':
+    prefix: 'create udf'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- UDF: dbo.${1:UDF_NAME}
+      -------------------------------------------------------------------------------
+
+      create or alter function dbo.${1:UDF_NAME}(
+          $2
+      )
+      returns ${3:RETURN_VALUE_DATATYPE}
+      as
+      begin
+
+          declare @value ${3:RETURN_VALUE_DATATYPE}
+
+          $4
+
+          return @value
+
+      end
+      go
+
+
+      grant execute on dbo.${1:UDF_NAME} to public
+      '''
+  'Create Table-Valued User-Defined Function (UDF)':
+    prefix: 'create tudf'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- UDF: ${1:t_TABLE_UDF_NAME}
+      -------------------------------------------------------------------------------
+
+      create or alter function ${1:t_TABLE_UDF_NAME}(
+          $2
+      )
+      returns @t table (
+          $3
+      )
+      as
+      begin
+
+          $4
+
+          return @t
+
+      end
+      go
+
+
+      grant select, insert, update, delete on ${1:t_TABLE_UDF_NAME} to public
+      '''

snippets/general.cson

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+'.source.sql':
+  'Add Comment Block':
+    prefix: '---'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- $1
+      -------------------------------------------------------------------------------
+      '''

snippets/procedures.cson

@@ -0,0 +1,22 @@
+'.source.sql':
+  'Create Stored Procedure':
+    prefix: 'create proc'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- PROCEDURE: ${1:PROCEDURE_NAME}
+      -------------------------------------------------------------------------------
+
+      create or alter procedure ${1:PROCEDURE_NAME}(
+          $2
+      )
+      as
+      begin
+
+          $3
+
+      end
+      go
+
+
+      grant execute on ${1:PROCEDURE_NAME} to public
+      '''

snippets/tables.cson

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+'.source.sql':
+  'Create Table':
+    prefix: 'create table'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- TABLE: ${1:TABLE_NAME}
+      -------------------------------------------------------------------------------
+
+      drop table if exists ${1:TABLE_NAME}
+      go
+
+
+      create table ${1:TABLE_NAME}(
+          $2
+      )
+      go
+
+
+      grant select, insert, update, delete on ${1:TABLE_NAME} to public
+      go
+      '''

snippets/triggers.cson

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+'.source.sql':
+  'Create DML Trigger (INSERT)':
+    prefix: 'create trigger insert'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- TRIGGER: ${1:TABLE_NAME}_INSERT
+      -------------------------------------------------------------------------------
+
+      create or alter ${1:TABLE_NAME}_INSERT on ${1:TABLE_NAME} after insert
+      as
+      begin
+
+          -- New table records:
+          select * from inserted i
+
+          $2
+
+      end
+      go
+      '''
+  'Create DML Trigger (UPDATE)':
+    prefix: 'create trigger update'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- TRIGGER: ${1:TABLE_NAME}_UPDATE
+      -------------------------------------------------------------------------------
+
+      create or alter ${1:TABLE_NAME}_UPDATE on ${1:TABLE_NAME} after update
+      as
+      begin
+
+          -- Updated table records:
+          select * from inserted i inner join deleted d on d.$identity = i.$identity
+
+          $2
+
+      end
+      go
+      '''
+  'Create DML Trigger (DELETE)':
+    prefix: 'create trigger delete'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- TRIGGER: ${1:TABLE_NAME}_DELETE
+      -------------------------------------------------------------------------------
+
+      create or alter ${1:TABLE_NAME}_DELETE on ${1:TABLE_NAME} after delete
+      as
+      begin
+
+          -- Deleted table records:
+          select * from deleted d
+
+          $2
+
+      end
+      go
+      '''

snippets/views.cson

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+'.source.sql':
+  'Create View':
+    prefix: 'create view'
+    body: '''
+      -------------------------------------------------------------------------------
+      -- VIEW: ${1:v_VIEW_NAME}
+      -------------------------------------------------------------------------------
+
+      create or alter view ${1:v_VIEW_NAME}
+      as
+
+          $2
+
+      go
+
+
+      grant select, insert, update, delete on ${1:v_VIEW_NAME} to public
+      go
+      '''