Accessing the annotation field values via AnnotationSymbol

[lnash94]

Description:

import ballerina/http;
import ballerina/constraint;

@constraint:String {minLength: 5}
public type Address string;

public type Person record {
    @constraint:String {maxLength: 14}
    string name?;
    @constraint:Array {maxLength: 5, minLength: 2}
    string[] hobby?;
    @constraint:Int {maxValue: 5}
    int id;
    Address address?;
    @constraint:Float {maxValue: 100000}
    float salary?;
    @constraint:Number {minValue: 500000}
    decimal net?;
};

service /payloadV on new http:Listener(9090) {
    resource function post pet(@http:Payload Person body) returns error? {
        return;
    }
}

If there is a annotation in record field, In openAPI we reuired to access, given annotation values for generating the openAPI specification.
The current implementation is driven by accessing RecordFieldTypeSymbol in the given record field. It returns the details about recordfield and we pick annotation details via calling .getAnnotations() but it didn't content annotation current available field values.

In above example, we need to get the details in name record field's annotation field maxLength: 14

Describe your problem(s)

1. For current openAPI tool, we tried to back track to get syntax node from typeSymbol location from calling .findNode() . But this approach I met with limitation when we are going to access type that defined in the separate model. Because our util we use only sematicModel and SyntaxTree that are not enough for getting separate module syntax node details.
2. Due to the limitation we have to pass the full project to the util instead of the sematicModel and Syntax tree, then it cause to some API changes to whole Ballerina to OpenAPI tool. Although we passed it there still we have do some kind of process finding dependency graph for tracking dependencies to access type define in the separate package. It will cause to some kind of conflict to the current util since it may additional process to mapping. Complex can be delaying to generate openapi spec, resolving dependency issue, interminante issue etc. (This util has used in several modules http, choreo, vsCode. Therefore we required to safe method to solve this.)

Describe your solution(s)
Considering the above issue and 1, 2 points , it would be great if we can have given AnnotationSymbol with extrafield that value with Optional regarding available record fields with their values.

Related issue : ballerina-platform/ballerina-library#5109