[EPIC] Direkt Playground Database accesse

[Zitrone44]

Is your feature request related to a problem? Please describe.
Students should be able to use a copy of their SQL-Playground Databases to directly connect from it from a programming language.

Subissues

• [Docker] Add shared postgresql Database #1496
• [SQL-Runner] Support for Playground Sharing #1481
• [Web] Fronted for SQL-Playground sharing #1482
• [API] Sharing of SQL-Playground copy #1483

Sequence Diagram:

Raw PlantUML

@startuml
"User" -> "FeedbackSystem\nUserInterface": Presses Share Button
"FeedbackSystem\nUserInterface" --> "FeedbackSystem\nAPI": Share Playground
"FeedbackSystem\nAPI" --> "Runner" : Share Playground
"Runner" --> "Playground DBMS" : Create Dump
"Runner" <-- "Playground DBMS" : Dump of the Playground Database
"Runner" --> "Share DBMS" : Load Dump
"Runner" <-- "Share DBMS" : New User and Database Created, Dump Loaded
"FeedbackSystem\nAPI" <-- "Runner"  : URL Containing Username, Password\nand Host of New Database
"FeedbackSystem\nUserInterface" <-- "FeedbackSystem\nAPI" : URL of Database
"User" <-- "FeedbackSystem\nUserInterface" : Shows URL of Database\nin PSQL and JDBC Format
@enduml