Add cmp & dev for DS18B20

[ubruhin]

SUMMARY

DATASHEETS / REFERENCES

https://www.analog.com/media/en/technical-documentation/data-sheets/ds18b20.pdf

OPEN QUESTIONS / UNRESOLVED ISSUES

Only the TO-92 variants for now, since the stupid datasheet is not clear about the dimensions of the other packages.

Depends on LibrePCB-Libraries/LibrePCB_ICs.lplib#44

CHECKLIST

• I have read and followed the library conventions¹.
• [na] For packages, I followed IPC7351C (see details in library conventions).
• [na] For modified elements, I bumped their version number².
• I already used the new library elements in a design and verified their correctness (optional).
• I'm the copyright owner of the added content (i.e. the changes are made by myself, not copied/imported from somewhere else).
• I agree to publish all my changes under the CC0 Public Domain License³, allowing everyone to use and modify the content without any restrictions.

¹ Library Conventions: https://docs.librepcb.org/#libraryconventions
² Minor version bump if only metadata was modified (e.g. "0.1" -> "0.1.1"), major version bump if functional changes were made (e.g. "0.1" -> "0.2")
³ CC0 Public Domain License: https://en.wikipedia.org/wiki/CC0