Add capability support (incl. adding tests for data types)

Add support for the following capabilities:

-- Main capabilities
"SELECTLIST_PROJECTION", "SELECTLIST_EXPRESSIONS", "AGGREGATE_GROUP_BY_COLUMN", "AGGREGATE_GROUP_BY_TUPLE",
"AGGREGATE_GROUP_BY_EXPRESSION", "AGGREGATE_SINGLE_GROUP", "FILTER_EXPRESSIONS", "JOIN", "JOIN_CONDITION_ALL",
"JOIN_CONDITION_EQUI", "JOIN_TYPE_INNER", "JOIN_TYPE_FULL_OUTER", "JOIN_TYPE_LEFT_OUTER",
"JOIN_TYPE_RIGHT_OUTER", "LIMIT", "LIMIT_WITH_OFFSET", "ORDER_BY_COLUMN", "ORDER_BY_EXPRESSION",

-- Literal capabilities
"LITERAL_BOOL", "LITERAL_DATE", "LITERAL_DOUBLE", "LITERAL_EXACTNUMERIC", "LITERAL_INTERVAL", "LITERAL_NULL",
"LITERAL_STRING", "LITERAL_TIMESTAMP", "LITERAL_TIMESTAMP_UTC",

-- Predicate capabilities
"FN_PRED_AND", "FN_PRED_BETWEEN", "FN_PRED_EQUAL", "FN_PRED_IN_CONSTLIST", "FN_PRED_IS_NOT_NULL",
"FN_PRED_IS_NULL", "FN_PRED_LESS", "FN_PRED_LESSEQUAL", "FN_PRED_LIKE", "FN_PRED_LIKE_ESCAPE", "FN_PRED_NOT",
"FN_PRED_NOTEQUAL", "FN_PRED_OR", --

-- Conversion functions
"FN_CAST",

-- Aggregate functions
"FN_AGG_AVG", "FN_AGG_AVG_DISTINCT", "FN_AGG_COUNT", "FN_AGG_COUNT_DISTINCT", "FN_AGG_COUNT_STAR", "FN_AGG_MAX",
"FN_AGG_MEDIAN", "FN_AGG_MIN", "FN_AGG_SUM", "FN_AGG_SUM_DISTINCT"

All available capabilities: https://github.com/exasol/exasol-virtual-schema-lua/blob/main/src/main/lua/exasol/evsl/adapter_capabilities.lua

The following capabilities are currently not supported for pushdown:

ORDER_BY_EXPRESSION
JOIN_CONDITION_ALL
SELECTLIST_EXPRESSIONS
LITERAL_INTERVAL
FN_PRED_LIKE and FN_PRED_LIKE_ESCAPE, see https://github.com/exasol/databricks-virtual-schema/issues/25

exasol / databricks-virtual-schema

Add capability support (incl. adding tests for data types) #21