[WIP]IBX-9631: Implement parser fetching content fields from expression

[barw4]

🎫 Issue	IBX-9631

TODO:

add more test cases

Description:

The parser will parse the following expressions:

expr         ::= (<group> '/')? <content_type> '/' <field> 
group        ::= id | '{' <id> (',' <id>)* '}'
content_type ::= id | '{' <id> (',' <id>)* '}' | '*'
field        ::= id | '{' <id> (',' <id>)* '}' 

fetch asked field definitions and provide an output in the form of a list that consists of field definition ids.

Example of usage:

$extractedFieldIds = $this->contentTypeFieldsExtractor->extractFieldsFromExpression('{Media,Content}/*/name');

will result in:

.array:2 [
  0 => 8
  1 => 9
]

For QA:

Documentation:

[sonarqubecloud]

Quality Gate passed

Issues
10 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud