feat(CITATION.cff): introduce proper citation metadata

CITATION.cff

+# This CITATION.cff file was generated with cffinit.
+# Visit https://bit.ly/cffinit to generate yours today!
+
+cff-version: 1.2.0
+title: zema_emc_annotated
+message: >-
+  If you use this software, please cite it using the provided metadata.
+type: software
+authors:
+  - given-names: Björn
+    family-names: Ludwig
+    email: bjoern.ludwig@ptb.de
+    affiliation: Physikalisch-Technische Bundesanstalt
+    orcid: 'https://orcid.org/0000-0002-5910-9137'
+  - given-names: Maximilian
+    family-names: Gruber
+    email: maximilian.gruber@ptb.de
+    affiliation: Physikalisch-Technische Bundesanstalt
+  - given-names: Tanja
+    family-names: Dorst
+    affiliation: ZeMA gGmbH
+    orcid: 'https://orcid.org/0000-0001-9756-9014'
+  - given-names: Anupam Prasad
+    family-names: Vedurmudi
+    email: anupam.vedurmudi@ptb.de
+    affiliation: Physikalisch-Technische Bundesanstalt
+repository-code: >-
+  https://github.com/PTB-M4D/zema_emc_annotated
+repository: >-
+  https://gitlab1.ptb.de/m4d/zema_emc_annotated
+abstract: >-
+  This codebase provides convenient access to the annotated data set of one
+  electromechanical cylinder at ZeMA testbed.
+keywords:
+  - measurement uncertainties
+  - dynamic measurement
+  - sensor network
+  - digital sensors
+  - MEMS
+  - machine learning
+  - European Union (EU)
+  - Horizon 2020
+  - EMPIR
+license: MIT
+version: 0.4.0
+date-released: '2023-01-16'