Add quote policy support for table name and column name

[lunny]

• removed the syntax (id) support. This is a break change.
• added SetTableQuotePolicy and SetColumnQuotePolicy on EngineInterface, this is also a break change for who implemented himself one.

Fix #1434

[codecov-io]

Codecov Report

Merging #1435 into master will increase coverage by 0.27%.
The diff coverage is 68.06%.

@@            Coverage Diff             @@
##           master    #1435      +/-   ##
==========================================
+ Coverage   56.88%   57.15%   +0.27%     
==========================================
  Files          48       49       +1     
  Lines        8190     8228      +38     
==========================================
+ Hits         4659     4703      +44     
+ Misses       2915     2908       -7     
- Partials      616      617       +1

Impacted Files	Coverage Δ
helpers.go	58.98% <ø> (-0.75%)	⬇️
session_query.go	61.7% <0%> (ø)	⬆️
dialect_oracle.go	0% <0%> (ø)	⬆️
dialect_mssql.go	76.67% <100%> (+1.18%)	⬆️
dialect_sqlite3.go	80.7% <100%> (+1.31%)	⬆️
session_schema.go	57.72% <100%> (ø)	⬆️
engine_cond.go	56.29% <100%> (ø)	⬆️
session.go	58.49% <100%> (ø)	⬆️
xorm.go	70.58% <100%> (+2.4%)	⬆️
session_delete.go	58.22% <100%> (ø)	⬆️
... and 13 more

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