ADR for Localization and Configuration (#36)

#### What this PR does / why we need it:
The ADR introduced in this PR collects suggestions on how to implement the localization and configuration process.

#### Which issue(s) this PR fixes:
<!--
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
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Signed-off-by: Gergely Brautigam <[email protected]>
Co-authored-by: Gergely Brautigam <[email protected]>
Co-authored-by: jakobmoellerdev <[email protected]>
Co-authored-by: Frederic Wilhelm <[email protected]>

docs/adr/README.md

@@ -0,0 +1,5 @@
+# Architecture Decision Record
+
+## Template
+The [template](./template.md) is taken over from 
+[here](https://github.com/joelparkerhenderson/architecture-decision-record/tree/main/locales/en/templates/decision-record-template-of-the-madr-project).