Implement rules tracking style of braces and parentheses

[jvsqzj]

This issue defines requirement to extend the lint module to include the following set of rules, as detailed in DML style guide:

Braces

• BR1 No braces are required around single-statement blocks (but see the rule for comments)
• BR2 Empty DML object declarations should be written with a semicolon instead of an empty brace pair
• BR3 Methods should have the opening brace on the same line as the method declaration

Parentheses

• PA1 Parentheses not required by the language may be added to expressions for clarity or indentation

• PA2 Parentheses should be added when the operator precedence is not intuitively obvious. This is mandatory to resolve precedence between the following operators, even if it is well-defined by the language:

   1. || vs &&
   2. bitwise operators (|, &, ^) vs each other
   3. bitwise operators vs arithmetic operators (+, -, *, /, %)
   4. bitwise operators vs comparisons (==, !=, >, <, >=, <=)
   5. shift operators (<<, >>) vs arithmetic operators
   6. comparisons vs each other
   7. shift operators vs each other
  

• PA3 When neither language nor understanding or layout require parentheses, they should be omitted

• PA4 Parentheses should also be added to assignment statements inside expressions, to clearly show that they were intended