Fix @McpResource title not propagated to Resource/ResourceTemplate

[mzeijen]

Summary

The @McpResource annotation has a title attribute, but none of the resource provider classes (AsyncMcpResourceProvider, AsyncStatelessMcpResourceProvider, SyncMcpResourceProvider, SyncStatelessMcpResourceProvider) copied it into the McpSchema.Resource or McpSchema.ResourceTemplate objects they build. Additionally, ResourceAdapter.asResourceTemplate() was missing the .title() call (while asResource() already had it).

For example, given:

@McpResource(uri = "test://resource", name = "test", title = "My Resource Title", description = "A test resource")
public ReadResourceResult readResource() { ... }

After building via any resource provider's getResourceSpecifications():

• resource.title() was null (expected: "My Resource Title")

This PR fixes the issue by reading resourceAnnotation.title() and passing it to .title() on both McpSchema.Resource and McpSchema.ResourceTemplate builders in all four provider classes and in ResourceAdapter.asResourceTemplate().