Add @id to example queries

Author: aibaars

cpp/ql/examples/snippets/addressof.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/addressof
  * @name Address of reference variable
  * @description Finds address-of expressions (`&`) that take the address
  *              of a reference variable

cpp/ql/examples/snippets/arrayaccess.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/arrayaccess
  * @name Array access
  * @description Finds array access expressions with an index expression
  *              consisting of a postfix increment (`++`) expression.

cpp/ql/examples/snippets/castexpr.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/castexpr
  * @name Cast expressions
  * @description Finds casts from a floating point type to an integer type
  * @tags cast

cpp/ql/examples/snippets/catch_exception.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/catch-exception
  * @name Catch exception
  * @description Finds places where we catch exceptions of type `parse_error`
  * @tags catch

cpp/ql/examples/snippets/constructor_call.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/constructor-call
  * @name Call to constructor
  * @description Finds places where we call `new MyClass(...)`
  * @tags call

cpp/ql/examples/snippets/derives_from_class.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/derives-from-class
  * @name Class derives from
  * @description Finds classes that derive from `std::exception`
  * @tags base

cpp/ql/examples/snippets/emptyblock.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/emptyblock
  * @name Empty blocks
  * @description Finds empty block statements
  * @tags empty

cpp/ql/examples/snippets/emptythen.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/emptythen
  * @name If statements with empty then branch
  * @description Finds `if` statements where the `then` branch is
  *              an empty block statement

cpp/ql/examples/snippets/eq_true.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/eq-true
  * @name Equality test on boolean
  * @description Finds tests like `==true`, `!=true`
  * @tags equal

cpp/ql/examples/snippets/field_access.ql

@@ -1,4 +1,5 @@
 /**
+ * @id cpp/examples/field-access
  * @name Access of field
  * @description Finds reads of `aDate` (defined on class `Order`)
  * @tags access