Add LICENSE File (#62)

Add MIT License, like in ebcl_template.

# Developer Checklist:
- [x] Test: Changes are tested
- [x] Doc: Documentation has been updated 
- [x] Git: Informative git commit message(s)
- [x] Issue: If a related GitHub issue exists, linking is done

## Checklists for documentation
- [x] Grammar: the content is grammatically correct
      (spelling, grammar, formatting, US English is used)
- [x] Comprehensibility/Unambiguousness: the content is easy readable,
clear to understand
- [x] Correctness and consistency: the content is technically correct
and consistent,
      no contradictions, no double descriptions
- [x] Terminology: technical terms are clear and they are used correctly
and documented in the glossary
- [x] Level of detail: the content matches the detail level necessary
for the reviewed object
      
# Reviewer checklist:
- [ ] Review: Changes are reviewed
- [ ] Review: Tested by the reviewer
      
## Checklists for documentation
- [ ] Grammar: the content is grammatically correct
      (spelling, grammar, formatting, US English is used)
- [ ] Comprehensibility/Unambiguousness: the content is easy readable,
clear to understand
- [ ] Correctness and consistency: the content is technically correct
and consistent,
      no contradictions, no double descriptions
- [ ] Terminology: technical terms are clear and they are used correctly
and documented in the glossary
- [ ] Level of detail: the content matches the detail level necessary
for the reviewed object

Author: opajonk

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) [2024] [Elektrobit Automotive GmbH]
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.