Add `json` data type

[guzman-raphael]

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• Add support for json type. Useful doc on querying with JSON_VALUE.
  • [x] insert
  • [x] fetch
  • [x] projection
  • [x] querying
  • [x] indexing
  • [x] describe
  • [ ] documentation
• Proposing here that we should only support json type in MySQL >=8.0 since JSON_VALUE approach is quite useful in returning with specific types, however, it was introduced in 8.x.
• Implement using MySQL's approach since it should be compatible with Percona as well. Though there is similar functionality in MariaDB, they've chosen to use json as an alias for longtext + check constraint using JSON_VALID. Due to how different the implementations are, MariaDB won't be supported in our implementation of json type.
• Full fetch is supported and partial fetches can be performed by projecting first (since a proper attribute name should be set).
• From MySQL docs, looks like the size upper limit is the same as longblob (i.e. 4GB) per value.
• Other items:
  • [x] Replace prints with logs
  • [x] table.progress() defaults to no display
  • [x] table.describe() defaults to no display
  • [x] Optimize database healthcheck in tests
  • [x] Fix bug in test_drop test
  • [x] Bump version to 0.14.0
• ~~Known gaps:~~
  • ~~support for creating indexes. It is possible but there is more needed work to make it compatible with describe().~~

Depends on #1052