Closes gh-25553

Closes gh-25564

Update `PrometheusScrapeEndpoint` so that it can produce both classic
Prometheus text output as well as Openmetrics output.

See gh-25564

Refine the new `Producible` support so that it can also be used with
`@ReadOperation`, `@WriteOperation` and `@DeleteOperation` annotations.

This update allows the same enum to be used both as an argument and as
an indicator of the media-types that an operation may produce.

Closes gh-25738

Update the actuator @Enpoint` infrastructure code so that operations
may inject enums that indicate the type of output to produce. A new
`Producible` interface can be implemented by any enum that indicates
the mime-type that an enum value produces.

The new `OperationArgumentResolver` provides a general strategy for
resolving operation arguments with `ProducibleOperationArgumentResolver`
providing support for `Producible` enums. Existing injection support has
been refactored to use the new resolver.

See gh-25738

Polish the prefix support introduced in commit a8592f36 and fix a
package tangle between `boot.context.properties.source` and `boot.env`.

The `Prefix` interface has now been moved into a new default method on
`OriginLookup`.

See gh-3450

Closes gh-25580

Closes gh-25579

Closes gh-25582

Closes gh-25648

Closes gh-25577

Closes gh-25646

Update `FlywayAutoConfiguration`, `LiquibaseAutoConfiguration` and
`DataSourceInitializer` classes so that they no longer depend on
`DataSourceProperties`. DB migrations can now be performed against
a `@Bean` defined primary `DataSource` with an alternative
username/password.

This update also removed using fallback properties when a custom
connection `url` is defined with Flyway or Liquibase. We now assume
that `username`, `password` and `driver-class-name` will be provided
if the default values are unacceptable. Our previous logic was
particularly flawed if a custom URL caused a change of driver type.

Closes gh-25643

Refactor `DataSourceBuilder` to use direct property mappers rather than
the `Binder` and aliases. Supported DataSource types now include two-way
mappers which allows us to both get and set properties in a uniform way.

A new `derivedFrom` factory method has been added which allows a new
`DataSource` to be derived from an existing one. This update is
primarily to allow Flyway and Liquibase migrations to work against a
`@Bean` configured DataSource rather than assuming that the primary
DataSource was always created via auto-configuration.

See gh-25643

Align our property with the recently changed spring-kafka default.

Closes gh-25730

Closes gh-25647

Closes gh-25578

Closes gh-25728

Closes gh-25727

Closes gh-25698

Closes gh-25492

* pr/25721:
  Polish "Support sending metrics to InfluxDB v2"
  Support sending metrics to InfluxDB v2

Closes gh-25721

See gh-25721

See gh-25721

Closes gh-25723

Closes gh-25725

Closes gh-25724

Closes gh-25723