Function parseVersion

parseVersion(versionString: string): Version
Parses a version string to the Version enum.

Port of version parsing logic from lifehash.cpp lines 130-145.
Parameters
- versionString: string
  The version string from CLI
Returns Version
The corresponding Version enum value
Throws
Error if the version string is invalid
Example
```
parseVersion("version2") // => Version.version2
parseVersion("detailed") // => Version.detailed
parseVersion("invalid") // throws Error
```
- Defined in tools/lifehash-cli/src/main.ts:47