Support Kubernetes Quantity format when specifying functions resources

[fantapsody]

Is your enhancement request related to a problem? Please describe.
When specifying resources in either function worker configuration (min/max/...) or function APIs (creation), the specified value must be an explicit number, just as the official example shows:

$ bin/pulsar-admin functions create \
  --jar target/my-functions.jar \
  --classname org.example.functions.MyFunction \
  --cpu 8 \
  --ram 8589934592 \
  --disk 10737418240

Especially for the storage which could be a large number, it's tedious and error-prone to specify these values as decimals explicitly.

Describe the solution you'd like
Maybe pulsar could take the example of the pattern of how Kubernetes define the value of resources:

• 12Mi: 12 * (2 ^ 20)
• 12M: 12 * (10 ^ 6)
• 1000m: 1 cpu

Describe alternatives you've considered
Maybe the storage quantity should be prioritized.

Additional context

[codelipenghui]

The issue had no activity for 30 days, mark with Stale label.

[tisonkun]

Closed as stale and no one worked on it. If anyone wants to continue it, feel free to reopen and submit a patch.