Move the source code to open source repo

[s-vitaliy]

Scope

• The source code has been moved to the open source repo
• Added docstrings to public classes/methods/etc.
• Updated project structure

NOTES

1. The source code was moved as is w/o refactoring, but the project layout was updated.
2. Helm chart and CRDs was not moved
3. The code coverage will be updated later, see: Improve code coverage in this repo #6

[github-actions]

Coverage after merging move-code into main will be

48.60%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
ArcaneEnvironment.cs	0%	100%	0%	0%	10, 5, 8–9
src/Extensions
V1JobExtensions.cs	85.58%	75%	90.91%	90.16%	40, 40, 45, 61–62, 62, 62, 62, 62–65, 83, 83
src/Services
StreamInteractionService.cs	0%	100%	0%	0%	16–19, 23–27, 31–35, 39–45
src/Services/Maintenance
HostedStreamingJobMaintenanceService.cs	0%	0%	0%	0%	16–24, 27–29, 29, 29–36, 39–42
StreamingJobMaintenanceService.cs	89.84%	82.14%	100%	91.40%	103–106, 121, 130–133, 135, 61, 66, 97
src/Services/Operator
HostedStreamOperatorService.cs	82.14%	100%	66.67%	82.61%	39–42
StreamOperatorService.cs	93.47%	87.04%	100%	95.65%	105–111, 116, 124, 138, 138, 144, 166
src/Services/Repositories
StreamDefinitionRepository.cs	0%	0%	0%	0%	100, 100, 100, 100, 100, 100, 100, 100, 100–103, 106–113, 23–30, 33–35, 35, 35, 35, 35, 35, 35, 35, 35–38, 41–50, 54–62, 62, 62, 62, 62, 62, 62, 62, 62–65, 68–77, 80–82, 82, 82, 82, 82, 82, 82, 82, 82–85, 88–95, 98–99
StreamingJobTemplateRepository.cs	0%	0%	0%	0%	18–25, 29–31, 31, 31, 31, 31, 31, 31, 31, 31–36, 39–47
src/Services/Streams
StreamingJobOperatorService.cs	0%	0%	0%	0%	100–107, 110–113, 113, 113–115, 118–121, 121, 121–123, 126–129, 129, 129–131, 134–137, 140–146, 150–152, 152, 152, 152, 152–155, 155, 155, 155, 155–156, 158–161, 163–169, 173, 173, 173, 173, 173–179, 182–188, 191–200, 31–43, 46, 49–56, 59–60, 60, 60–63, 63, 63–70, 70, 70–90, 90, 90, 90, 90–93, 93, 93–99
src/StreamDefinitions/Base
IStreamDefinition.cs	90%	83.33%	100%	100%	28
src/StreamStatuses/StreamStatus/V1Beta1
V1Beta1StreamStatus.cs	100%	100%	100%	100%