Annotate fields with dots and other unusual characters in the name

[NickVolynkin]

Sometimes we have complex field names in values.yaml.
There should be a way to annotate such fields.

packages/apps/tenant/values.yaml, showing two possible options to define nvidia.com/gpu as a field name.

## @param resourceQuotas {resourceQuotas} Define resource quotas for the tenant
## @field resourceQuotas."nvidia.com/gpu" {quantity} GPU quota
## @field resourceQuotas[nvidia.com/gpu] {quantity} GPU quota
# resourceQuotas:
#   nvidia.com/gpu: 4
resourceQuotas: {}

packages/apps/kafka/values.yaml, see topics.[i].config.*

## @section Application-specific parameters
##
## @param topics {[]topic} Topics configuration
## @field topic {topic} Topic
## @field topic.name {string} Topic name
## @field topic.partitions {int} Number of partitions
## @field topic.replicas {int} Number of replicas
## @field topic.config {[]value} Topic configuration
## Example:
## topics:
##   - name: Results
##     partitions: 1
##     replicas: 3
##     config:
##       min.insync.replicas: 2
##   - name: Orders
##     config:
##       cleanup.policy: compact
##       segment.ms: 3600000
##       max.compaction.lag.ms: 5400000
##       min.insync.replicas: 2
##     partitions: 1
##     replicas: 3
##
topics: []