chore: Add missing config values to mapper

[georgi-l95]

Description:
This PR makes the following changes:

• On the server side adds the following missing configs to the mapper:
  • producer.type → PRODUCER_TYPE (default: "PRODUCTION")
  • mediator.type → MEDIATOR_TYPE (default: "PRODUCTION")
• On the simulator side adds the following missing configs to the mapper:
  • From GrpcConfig.java:
    • grpc.serverAddress (default: "localhost")
    • grpc.port (default: 8080)
  • From BlockStreamConfig.java:
    • blockStream.simulatorMode (default: "PUBLISHER")
    • blockStream.delayBetweenBlockItems (default: 1_500_000)
    • blockStream.maxBlockItemsToStream (default: 100_000)
    • blockStream.streamingMode (default: "MILLIS_PER_BLOCK")
    • blockStream.millisecondsPerBlock (default: 1000)
    • blockStream.blockItemsBatchSize (default: 1000)
  • From BlockGeneratorConfig.java:
    • generator.generationMode (default: "DIR")
    • generator.folderRootPath (default: "")
    • generator.managerImplementation (default: "BlockAsFileBlockStreamManager")
    • generator.paddedLength (default: 36)
    • generator.fileExtension (default: ".blk.gz")
    • generator.startBlockNumber (default: 1)
    • generator.endBlockNumber (default: -1)

Additional external variables added to both are:

• prometheus.endpointEnabled (default: true)
• prometheus.endpointPortNumber (default: 9999)

Adds two new gradle tasks for the simulator:

• runPublisher (starts simulator in Publisher mode with enabled prometheus on port 9998)
• runConsumer (starts simulator in Consumer mode with enabled prometheus on port 9997)

Related issue(s):

Fixes #285

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[mattp-swirldslabs]

Nice work. LGTM.

[AlfredoG87]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.97%. Comparing base (a81b59b) to head (4be2a3b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #405   +/-   ##
=========================================
  Coverage     96.96%   96.97%           
- Complexity      395      397    +2     
=========================================
  Files            79       80    +1     
  Lines          1417     1421    +4     
  Branches         93       93           
=========================================
+ Hits           1374     1378    +4     
  Misses           32       32           
  Partials         11       11           

Files with missing lines	Coverage Δ
...er/config/ServerMappedConfigSourceInitializer.java	100.00% <ø> (ø)
...config/SimulatorMappedConfigSourceInitializer.java	100.00% <100.00%> (ø)