dec_parser: support parsing pcd strings with pipes

[Javagedes]

previously, the dec parser would fail to parse a PcdDeclarationEntry that contained a pipe symbol in the default value. This commit updates the parser to detect pipes wrapped in quotes and not split on it.

closes #234

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (fd3aac5) 78.68% compared to head (e527585) 78.68%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #365   +/-   ##
=======================================
  Coverage   78.68%   78.68%           
=======================================
  Files          47       47           
  Lines        6727     6729    +2     
=======================================
+ Hits         5293     5295    +2     
  Misses       1434     1434           

Impacted Files	Coverage Δ
edk2toollib/uefi/edk2/parsers/dec_parser.py	92.73% <100.00%> (+0.08%)	⬆️

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[makubacki]

Did you check if this was an issue in some other parsing logic like PCDs being assigned in DSC files?

[Javagedes]

Did you check if this was an issue in some other parsing logic like PCDs being assigned in DSC files?

No, But I just did:

1. The dsc_parser and inf_parser only record the token_space name & name, so a string value with a | would not break them.
2. The other parsers do not do anything with PCDs