auth: add the caching sha2 algorithm for authentication (#1232)

This allows validating passwords against the `authentication_string`
data that MySQL stores for caching_sha2 passwords.

Related:
- pingcap/tidb#9411

Add Admin Telemetry Statement (#908) (#909)

Signed-off-by: Breezewish <[email protected]>

model: correct the usage of json.Unmarshal in DecodeArgs (#890) (#896)

parser: support partition selection grammer for the delete statement (#…

…868) (#870)

parser: support partition selection grammer for the delete statement (#…

…868) (#870)

parser: add order by clause in group_concat (#813) (#847)

lexer: replace version comments with feature-ids mechanism (#777) (#838)

parser: introduce a new privilege for the `set config` statement (#835)

parser: add auto_random_base table option (#830)

parser: add auto_random_base table option (#830)