Add support for newlines inside "NAME" token

[sMezaOrellana]

The following file is parsable by the gcc & clang compiler.

#define __SOCKADDR_COMMON_SIZE (sizeof(unsigned short))
typedef uint32_t in_addr_t;

#define __SOCKADDR_COMMON(sa_prefix) sa_family_t sa_prefix##family

typedef unsigned short sa_family_t;
struct in_addr {
  in_addr_t s_addr;
};

typedef uint16_t in_port_t;

struct sockaddr {
  sa_family_t sa_family;

  char sa_data[14]; /* Address data.  */
};

struct sockaddr_in {
  sa_family_t sin_family;
  in_port_t sin_port;      /* Port number.  */
  struct in_addr sin_addr; /* Internet address.  */

  /* Pad to size of `struct sockaddr'.  */
  unsigned char sin_zero[sizeof(struct sockaddr) - __SOCKADDR_COMMON_SIZE -
                        sizeof(in_port_t) - sizeof(struct in_addr)];
};

however this part of the code was giving issues when parsing with cstruct

  /* Pad to size of `struct sockaddr'.  */
  unsigned char sin_zero[sizeof(struct sockaddr) - __SOCKADDR_COMMON_SIZE -
                        sizeof(in_port_t) - sizeof(struct in_addr)];
};

I modified the "NAME" token regex to allow for newline character. This however means that the new newline needs to be handled by the ExpressionTokenizer. Which was also added.

A test case was also added to test the functionality.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.46%. Comparing base (ed1daf2) to head (6b22ff4).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #111   +/-   ##
=======================================
  Coverage   92.46%   92.46%           
=======================================
  Files          20       20           
  Lines        2176     2176           
=======================================
  Hits         2012     2012           
  Misses        164      164           

Flag	Coverage Δ
unittests	92.46% <100.00%> (ø)

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