Add server-side scripting to gRPC API

Summary

Related to #25

Focus

Point the reviewer to the core of the code change. Where should they start reading? What should they focus on (e.g. security, performance, maintainability, user-friendliness, compliance with the specs, finding more corner cases, concrete questions)?

Test Environment

How to set up a test environment for manual testing?

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• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Up-to-date JSON schema (or not necessary)
• Appropriate user and developer documentation (or not necessary)
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Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• Appropriate user and developer documentation (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

For further good practices have a look at our review guidelines.

proto/caosdb/scripting/v1alpha1/scripting.proto

@@ -92,8 +92,8 @@ message ServerSideScriptExecutionId {
 message ExecuteServerSideScriptResponse {
   // Id of the script execution
   ServerSideScriptExecutionId script_execution_id = 1;
-  // The script to execute
-  string script_filename = 2;
+  // The full command that was executed including all args
+  string call = 2;
   // The result of the script execution
   ServerSideScriptExecutionResult result = 3;
   // Script return code