Resolves #948

Deprecated Constants (all marked with @deprecated 5.0.0):

• All PHINX_TYPE_* constants now reference the new TYPE_* constants
• PHINX_TYPES_GEOSPATIAL references the new array

Since they all have the same string value, this should be fully BC

These are deprecated MySQL-specific types that don't have new equivalents since they're being removed:

• PHINX_TYPE_ENUM - deprecated in 5.0.0
• PHINX_TYPE_SET - deprecated in 5.0.0
• PHINX_TYPE_BLOB, PHINX_TYPE_TINYBLOB, PHINX_TYPE_MEDIUMBLOB, PHINX_TYPE_LONGBLOB - deprecated in 5.0.0
• PHINX_TYPE_VARBINARY - deprecated in 5.0.0
• PHINX_TYPE_JSONB - deprecated in 5.0.0

These remain using their old names because they're deprecated themselves and will be removed entirely in a future version (afaik?). At least they dont have a matching constant in the Cake Schema interface.

This finishes the phinx cleanup, since now you can start using the new ones, and in 6.x (for Cake 6) we can remove all deprecations for good. Enough time for people to upgrade.

My rational is:

• Better starting now than having to deal with this in 6.x
• Soft deprecation, so no rush to get things migrated (using rector script)
• Cleaner code base and naming right away for everyone
• Deprecated constants also more visible due to the old naming.

Rector automation PR: cakephp/upgrade#361