Need more defensive creation of ComponentDescriptor names

[dee0sap]

What happened:

I reviewed the code for component:ConstructUniqueName and found it wanting as it doesn't defend

• against generated names being longer than kubernetes allows
• characters that are allowed in semantic versioning, e.g. '+', but not allowed in kubernetes names

What you expected to happen:
component:ConstructUniqueName should defend against both of the conditions above

How to reproduce it (as minimally and precisely as possible):
Produce a componetversion where the component name is near the limit allowed for kubernetes object names and/or try to use a version that uses characters that are allowed in semantic versioning but not in kubernetes object names

Anything else we need to know:
Nope

Environment:
Current version of OCM-Controller running in a Gardener cluster