add pgclimb, pgfutter, imposm3 tools ( posgresql - golang related )

Added tools:
- [github.com/lukasmartinelli/pgclimb](https://github.com/lukasmartinelli/pgclimb) - Export data from PostgreSQL into different data formats (JSON, JSON Lines, CSV, XLSX, XML) or use a Golang templates
- [github.com/lukasmartinelli/pgfutter](https://github.com/lukasmartinelli/pgfutter) - Import CSV and JSON into PostgreSQL the easy way
- [github.com/omniscale/imposm3](https://github.com/omniscale/imposm3) - Import OpenStreetMap data into PostgreSQL/PostGIS database

Temporary - I added to the "SQL-like Database Interactions" group.
maybe in the future - we need a "PostgreSQL" subgroup

tooling/README.md

@@ -133,6 +133,9 @@ Also, this space includes a list of proposed packages that would fill certain ga
 - [github.com/go-pg/pg](https://github.com/go-pg/pg) - Fast PostgreSQL client and ORM.
 - [github.com/go-sql-driver/mysql](https://github.com/go-sql-driver/mysql) - A MySQL-Driver for Go's `database/sql` package.
 - [github.com/mattn/go-sqlite3](https://github.com/mattn/go-sqlite3) - sqlite3 driver conforming to the built-in `database/sql` interface.
+- [github.com/lukasmartinelli/pgclimb](https://github.com/lukasmartinelli/pgclimb) - Export data from PostgreSQL into different data formats (JSON, JSON Lines, CSV, XLSX, XML) or use a Golang templates 
+- [github.com/lukasmartinelli/pgfutter](https://github.com/lukasmartinelli/pgfutter) - Import CSV and JSON into PostgreSQL the easy way
+- [github.com/omniscale/imposm3](https://github.com/omniscale/imposm3) - Import OpenStreetMap data into PostgreSQL/PostGIS database
 
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