print error info for Database error in the sp-blockchain::Error type.

[atenjin]

In our project, when running the node, we meet the error:

2023-05-29 12:38:18 | 2023-05-29 04:38:17.993  WARN tokio-runtime-worker sc_service::client::client: Block import error: Database

Then the following blocks can not sync.
Look deep into the code, I know the error appear in the deep level of database, for example now we are using the rocksdb, so this error comes from the rockesdb.

However in the error log, the database error is dropped in the sp-runtime::Error type.

And I think the error type sp-database::DatabaseError already impl Debug trait, so I think this error info can show in the sp-runtime::Error also.

substrate/primitives/database/src/error.rs

Lines 18 to 21 in b8d7dd5

	/// The error type for database operations.
	#[derive(Debug)]
	pub struct DatabaseError(pub Box<dyn std::error::Error + Send + Sync + 'static>);

In this pr, I plan to let this error info can contain the Database error info

substrate/primitives/blockchain/src/error.rs

Lines 152 to 156 in b8d7dd5

	#[error("Database")]
	DatabaseError(#[from] sp_database::error::DatabaseError),
	#[error("Failed to get header for hash {0}")]

[melekes]

👍