feat: replace database params with URI (#84)

<!-- < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < ☺
v                               ✰  Thanks for creating a PR! ✰
v    Before smashing the submit button please review the checkboxes.
v If a checkbox is n/a - please still include it but + a little note why
☺ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >  -->

This PR updates most of the database configuration params with a simpler
URI

- [x] Targeted PR against correct branch.
- [ ] Linked to Github issue with discussion and accepted design OR link
to spec that describes this work.
- [ ] Wrote unit tests.
- [ ] Re-reviewed `Files changed` in the Github PR explorer.

Co-authored-by: Magic Cat <37407870+MonikaCat@users.noreply.github.com>

CHANGELOG.md

@@ -7,6 +7,7 @@
 - ([\#77](https://github.com/forbole/juno/pull/77)) Add wait group to handle messages concurrently
 - ([\#79](https://github.com/forbole/juno/pull/79)) Use `sqlx` instead of `sql` while dealing with a PostgreSQL database
 - ([\#83](https://github.com/forbole/juno/pull/83)) Bump `github.com/tendermint/tendermint` to `v0.34.22`
+- ([\#84](https://github.com/forbole/juno/pull/84)) Replace database configuration params with URI
 
 ## v3.4.0
 ### Changes

cmd/migrate/cmd.go

@@ -8,16 +8,14 @@ import (
 
 	"github.com/spf13/cobra"
 
-	v2 "github.com/forbole/juno/v3/cmd/migrate/v2"
-	v3 "github.com/forbole/juno/v3/cmd/migrate/v3"
+	v4 "github.com/forbole/juno/v3/cmd/migrate/v4"
 )
 
 type Migrator func(parseCfg *parsecmdtypes.Config) error
 
 var (
 	migrations = map[string]Migrator{
-		"v2": v2.RunMigration,
-		"v3": v3.RunMigration,
+		"v4": v4.RunMigration,
 	}
 )
 
@@ -35,8 +33,7 @@ func NewMigrateCmd(appName string, parseConfig *parsecmdtypes.Config) *cobra.Com
 		Use:   "migrate [to-version]",
 		Short: "Perform the migrations from the current version to the specified one",
 		Long: `Migrates all the necessary things (config file, database, etc) from the current version to the new one.
-If you are upgrading from a very old version to the latest one, migrations must be performed in order 
-(eg. to migrate from v1 to v3 you need to do v1 -> v2 and then v2 -> v3). 
+Note that migrations must be performed in order: to migrate from vX to vX+2 you need to do vX -> vX+1 and then vX+1 -> vX+2. 
 `,
 		Example: fmt.Sprintf("%s migrate v3", appName),
 		Args:    cobra.RangeArgs(0, 1),