feat: Refactor storage using triggers

[flemzord]

Replace #168 Refactor storage.

This PR add triggers on "transactions" table to automatically compute balances and volumes of accounts in "balances" and "volumes" tables.
It also create entries in a new table called "accounts". This table will replace "addresses" table.
Now, transaction postings are directly persist as json in the transactions table, as well as metadata.
Account metadata are persisted in "accounts" table, also with json type.

Previously, the GET /accounts was not retrieving accounts which was not part of a transaction.
The new table "accounts" fix defacto this issue.

Also, there is another new table, called "log" which is designed to model an event based store. The code now always write to this table, then a set of triggers generates
entries in the transaction table, or updates metadata of either accounts or transactions following the log "type" column.
The hash on transactions was removed and add on "log" table. As a result we have a complete hash chain taking in account, metadata set on transactions or accounts.
To complete the modification on hash, the "id" property of transactions has been changed from id to a string, and is set to be a uuid by the code.
Old transactions will not have a uuid , just a int to string convert is done by the migration, but since the id is an opaque string, it should not cause any problem. A column named "ord" has been added to keep transactions ordering without the need to read all logs. It is generate by triggers, and not by the code.

[codecov]

Codecov Report

Merging #174 (f96edb0) into main (d3f7ef0) will decrease coverage by 12.83%.
The diff coverage is 63.76%.

❗ Current head f96edb0 differs from pull request most recent head bc39b2e. Consider uploading reports for the commit bc39b2e to get more accurate results

@@             Coverage Diff             @@
##             main     #174       +/-   ##
===========================================
- Coverage   73.21%   60.37%   -12.84%     
===========================================
  Files          83       81        -2     
  Lines        3338     3541      +203     
===========================================
- Hits         2444     2138      -306     
- Misses        713     1212      +499     
- Partials      181      191       +10     

Impacted Files	Coverage Δ
pkg/api/api.go	100.00% <ø> (ø)
pkg/api/controllers/controllers.go	100.00% <ø> (ø)
pkg/api/controllers/transaction_controller.go	11.11% <0.00%> (-41.89%)	⬇️
pkg/api/middlewares/ledger_middleware.go	57.89% <0.00%> (-3.22%)	⬇️
pkg/bus/message.go	71.42% <ø> (ø)
cmd/storage.go	16.26% <14.72%> (-83.74%)	⬇️
pkg/storage/driver.go	28.57% <28.57%> (ø)
pkg/api/internal/testing.go	21.73% <33.33%> (-76.53%)	⬇️
pkg/storage/storage.go	47.45% <50.00%> (-16.95%)	⬇️
pkg/storage/cache.go	53.84% <55.55%> (-10.44%)	⬇️
... and 49 more

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[flemzord]

Todo

• TxID UUID or Incremental ID ?
• Command cli for update schema ?
• Create documentation for Upgrade Guide