Return to int64 for integer values

Summary

Returns to int64 as transport representation (and client representation) for integer values.

Server implemenation in caosdb-server!29 (merged)

Focus

• Most of the changes are "just" replacing the int32_t with int64_t.
• Also, a typo in ccaosdb.cpp which is unrelated has been fixed and tested.

Test Environment

• No manual testing needed.
• Integration tests are in caosdb-cppinttest!14 (merged)

Check List for the Author

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• All automated tests pass
• Reference related Issues
• [ ] Up-to-date CHANGELOG.md
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• [ ] Up-to-date CHANGELOG.md
• 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.

CMakeLists.txt

@@ -20,7 +20,7 @@
 
 cmake_minimum_required(VERSION 3.13)
 
-set(libcaosdb_VERSION 0.0.13)
+set(libcaosdb_VERSION 0.0.15)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_MAJOR 0)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_MINOR 5)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_PATCH 0)