tarantool / tarantool / 9465

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sql: Enable ANALYZE SQL stmt

The patch enables runtime analysis to be used
while optimizing SQL queries. It basically updates
legacy SQLite code to be able to work w/ Tarantool
backend. Most aggressive analysis is enabled by
default (a.k.a. stat4).
Changes include learning analyzer that:
  - No rowid anymore
  - Indexes contain no extra columns
  - Order of columns in the index
    is the same as in the original table
  - MsgPack is underlying data structure
  - Learn analyze to use PK-only tables
  - sqlite3KeyInfoOfIndex was extended w/ db param,
    which is used during vdbe execution, since there's
    no pParse available at that time

Most of analyze* tests were adopted in sql-tap

Closes #2623

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58273 of 74224 relevant lines covered (78.51%)

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