chore: expose get value for metadata

[Kavindu-Dodan]

This PR

Make the getValue method public for FlagMetadata.java. This allows generic value extractions where needed (ex:- Loop across <key, type> and extract them from flag metadata instead of checking for type and calling the exact method).

for (DimensionDescription description:dimensionDescriptions) {
        flagMetadata.getValue(description.getKey(), description.getType());
}

// where 

DimensionDescription is <key of String, type of Class>

[codecov]

Codecov Report

Merging #468 (70ece1a) into main (3946211) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main     #468   +/-   ##
=========================================
  Coverage     94.44%   94.44%           
  Complexity      268      268           
=========================================
  Files            25       25           
  Lines           612      612           
  Branches         36       36           
=========================================
  Hits            578      578           
  Misses           17       17           
  Partials         17       17           

Flag	Coverage Δ
unittests	94.44% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...rc/main/java/dev/openfeature/sdk/FlagMetadata.java	100.00% <ø> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication