Add basic test cases and workflows for the Moesif extension

[Dilhasha]

Purpose

Add basic test cases and workflows for the Moesif extension

[Copilot]

Pull Request Overview

This PR adds comprehensive test coverage for the Moesif extension by introducing unit tests for Java components and Ballerina integration tests. The tests validate the core functionality of the extension including tracer provider behavior, rate limiting sampler, and configuration handling.

• Adds Java unit tests for RateLimitingSampler and MoesifTracerProvider classes
• Creates Ballerina test suites for tracer provider functionality with mock external method calls
• Introduces GitHub Actions workflows for CI/CD including pull request validation, daily builds, and release publishing

Reviewed Changes

Copilot reviewed 21 out of 22 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/src/test/java/io/ballerina/observe/trace/moesif/sampler/RateLimitingSamplerTest.java	Comprehensive unit tests for the RateLimitingSampler class covering constructor validation, sampling behavior, and parameter handling
tests/src/test/java/io/ballerina/observe/trace/moesif/MoesifTracerProviderTest.java	Unit tests for MoesifTracerProvider including name validation, initialization behavior, and propagator configuration
tests/build.gradle	Gradle configuration for running Java unit tests with proper dependencies and coverage reporting
native/build.gradle	Updates native module build to include JUnit 5 test dependencies and configuration
ballerina/tests/tracer_provider_test.bal	Ballerina test suite for tracer provider logic with mock external method calls and configuration validation
ballerina/Dependencies.toml	Updated dependencies to include test framework support
ballerina-tests/	Complete integration test project structure with server tests, configuration files, and build setup
.github/workflows/	GitHub Actions workflows for CI/CD including pull request validation, builds, and publishing

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