Create the 'Defining and manipulating data' section and move content

Author: andreyaksenov

doc/concepts/index.rst

@@ -110,7 +110,6 @@ For details, check the :ref:`Storage engines <engines-chapter>` section.
     :hidden:
 
     configuration
-    data_model/index
     coop_multitasking
     atomic
     modules      

doc/enterprise/index.rst

@@ -65,11 +65,8 @@ Tarantool Enterprise Edition
 
     security
     audit
-    tuple_compression
-    read_views
     flight_recorder
     audit_log
-    space_upgrade
     system_metrics
     deprecated
     rocksref

doc/how-to/index.rst

@@ -16,8 +16,6 @@ If you are new to Tarantool, please see our
 ..  toctree::
     :maxdepth: 2
 
-    db/index
     replication/index
     app/index
-    sql/index
     other/index

doc/how-to/db/crud.rst renamed to doc/platform/ddl_dml/crud.rst

@@ -6,6 +6,10 @@ This section contains guides on performing data operations in Tarantool.
 ..  toctree::
     :maxdepth: 1
 
-    crud
-    indexes
-    sequences
+    value_store
+    schema_desc
+    operations
+    migrations
+    read_views
+    sql/index
+