Add 'migrations' to grailsAppResourceDirs resolve duplicates

[jamesfredley]

The 'migrations' directory is now included in grailsAppResourceDirs, allowing it to be treated as a resource directory alongside 'views', 'i18n', and 'conf'.

resolves: #15078

The underlying issue, which also appears to be true for Grails 6, is that /grails-app/migrations/* are not added to /build/resources/main or the generated war/jar

Due to: #15077, the following is required to test on Windows

tasks.named('assetCompile').configure { enabled = false } 

[jamesfredley]

This fixed bootRun, bootJar and bootWar, but causes a duplication issue with dbm-update

[jamesfredley]

> Task :dbmUpdate . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v3.5.6) Grails application running at http://localhost:0 in environment: development ERROR: Exception Details ERROR: Exception Primary Class: IOException ERROR: Exception Primary Reason: Found 2 files with the path 'test-domain.groovy': - file:///C:/Users/james/Documents/IdeaProjects/database-migration-test/grails-app/migrations/test-domain.groovy - file:///C:/Users/james/Documents/IdeaProjects/database-migration-test/build/resources/main/test-domain.groovy Search Path: - C:\Users\james\Documents\IdeaProjects\database-migration-test\grails-app\migrations You can limit the search path to remove duplicates with the liquibase.searchPath setting. Or, if you KNOW these are the exact same file you can set liquibase.duplicateFileMode=WARN. ERROR: Exception Primary Source: H2 2.3.232 (2024-08-11) 

[jdaugherty]

dbm-update has never worked for me in the past. It doesn't load the same context that bootRun does. I'd argue dbm-update should be replaceed by something that just starts the server & shuts down.

[jamesfredley]

sourceSets { main { resources { srcDir 'grails-app/migrations' } } } 

which historically was added to build.gradle, but was not auto generated by forge, to accomplish adding /grails-app/migrations/* to /build/resources/main or the generated war/jar, also creates the duplicates issue, so I am moving forward with fixing that also as part of this PR too

[jamesfredley]

Resolved duplicates issue and updated docs

[jdaugherty]

looks there are some code style issues and maybe test failures?