add spring boot starter of xinference

[alvinlee518]

Issue

Closes #

Change

General checklist

• There are no breaking changes
• I have added unit and integration tests for my change
• I have manually run all the unit tests in all modules, and they are all green
• I have manually run all integration tests in the module I have added/changed, and they are all green

• I have added/updated the documentation
• I have added an example in the examples repo (only for "big" features)
• I have added/updated Spring Boot starter(s) (if applicable)

Checklist for adding new maven module

• I have added my new module in the root pom.xml and langchain4j-community-bom/pom.xml

Checklist for adding new embedding store integration

• I have added a {NameOfIntegration}EmbeddingStoreIT that extends from either EmbeddingStoreIT or EmbeddingStoreWithFilteringIT
• I have added a {NameOfIntegration}EmbeddingStoreRemovalIT that extends from EmbeddingStoreWithRemovalIT

Checklist for changing existing embedding store integration

• I have manually verified that the {NameOfIntegration}EmbeddingStore works correctly with the data persisted using the latest released version of LangChain4j

[Martin7-1]

@alvinlee518 Thank you! I'm wondering if we could still use Testcontainers to do IT.

No hurry, will try to review it next week :)

[Martin7-1]

@alvinlee518 Thank you!

There are three opinions:

1. The Spring Boot starter lacks resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports file.
2. Please add new module to langchainj4-community-bom.
3. I'm thinking about whether we should add @ConditionalOnMissingBean in every bea n definition, as users may want to register their custom bean. WDYT?

[alvinlee518]

@alvinlee518 Thank you!

There are three opinions:

1. The Spring Boot starter lacks resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports file.
2. Please add new module to langchainj4-community-bom.
3. I'm thinking about whether we should add @ConditionalOnMissingBean in every bea n definition, as users may want to register their custom bean. WDYT?

@Martin7-1

use @ConditionalOnMissingBean to ensure only one Bean is loaded.
Additionally, adding anenabled field inProperties can provide better control over Bean loading.
eg:

    @Bean
    @ConditionalOnMissingBean
    @ConditionalOnProperty(prefix = PREFIX + ".chat-model", name = "enabled", havingValue = "true", matchIfMissing = true)
    public XinferenceChatModel xinferenceChatModel(Properties properties) 

[Martin7-1]

@alvinlee518 Great job! Thank you!