Bson specification testing

[rozza]

Moved specifications submodule out of driver-core into a testing directory.
Deleted old copy of bson specification tests and updated to use the submodule
Fixed Json output for positive exponents to match the the extended json specification

Added test exceptions to BinaryVectorGenericBsonTest
Added BsonBinaryVector prose tests
Added extra regression tests to ensure both explicit and implicit doubles with positive exponets parse as expected.

JAVA-5877
JAVA-5779
JAVA-5782
JAVA-5652

[Copilot]

Pull Request Overview

This PR reorganizes specification testing by moving the MongoDB specifications submodule from driver-core to a shared testing directory, updates JSON output for positive exponents to match the extended JSON specification, and adds comprehensive testing for BsonBinaryVector functionality.

• Moved specifications submodule from driver-core to shared testing directory for better organization
• Fixed JSON output to include explicit "+" signs for positive exponents in extended JSON
• Added comprehensive testing for BsonBinaryVector including prose tests and enhanced validation

Reviewed Changes

Copilot reviewed 47 out of 49 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.gitmodules	Updated submodule path from driver-core to testing directory
bson/build.gradle.kts	Added test resource processing to include shared testing resources
driver-core/build.gradle.kts	Added test resource processing to include shared testing resources
bson/src/main/org/bson/json/*.java	Modified double converters to use consistent JSON formatting with explicit positive exponents
bson/src/main/org/bson/BinaryVector.java	Added validation logging for non-zero padding bits
bson/src/test/unit/org/bson/vector/BinaryVectorGenericBsonTest.java	Enhanced test coverage and updated to use new spec test location
bson/src/test/unit/org/bson/*.java	Updated test references to use new specification test helper method
bson/src/test/resources/bson*/	Removed old BSON specification test files (now using submodule)

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