add LinDB to database (#5008)

README.md

@@ -685,6 +685,7 @@ _Data stores with expiring records, in-memory distributed data stores, or in-mem
 - [ledisdb](https://github.com/siddontang/ledisdb) - Ledisdb is a high performance NoSQL like Redis based on LevelDB.
 - [levigo](https://github.com/jmhodges/levigo) - Levigo is a Go wrapper for LevelDB.
 - [libradb](https://github.com/amit-davidson/LibraDB) - LibraDB is a simple database with less then 1000 lines of code for learning.
+- [LinDB](https://github.com/lindb/lindb) - LinDB is a scalable, high performance, high availability distributed time series database.
 - [lotusdb](https://github.com/flower-corp/lotusdb) - Fast k/v database compatible with lsm and b+tree.
 - [Milvus](https://github.com/milvus-io/milvus) - Milvus is a vector database for embedding management, analytics and search.
 - [moss](https://github.com/couchbase/moss) - Moss is a simple LSM key-value storage engine written in 100% Go.