Create Markdown documentation for current LS schema (WIP) (#179)

* chore: init schema doc

* chore: pool_hash, slot_leader desc

* chore: add description for 'block' table

* update a part of docs schema

* update full schema docs

* update schema document v1

* add docs Utxo store and Account aggregation

* update information PK for part of docs Utxo store and Account aggregation

* update description

* update description table address_tx_amount

* move address_utxo and tx-input under Account aggregation

* add main section

* bold section

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Co-authored-by: sotatek-huyle3 <[email protected]>
Co-authored-by: Sotatek-QuanLeA <[email protected]>