[1401] Use GeoTools Bill of Materials (BOM) to manage geotools dependency versions

[groldan]

Integrate the GeoTools Bill of Materials (gt-bom) into GeoWebCache, centralizing management of GeoTools dependency versions.

• Import org.geotools:gt-bom in the root pom.xml's <dependencyManagement> section. This makes GeoWebCache a direct consumer of GeoTools' curated dependency set.
• Remove explicit <version>${gt.version}</version> declarations for individual GeoTools artifacts from all module POMs. Versions are now inherited from the imported gt-bom.
• Remove unused dependency org.freemarker:freemarker
• Delegate the following dependency versions to the GeoTools BOM:
  • apache commons (io, logging, collections, text, dbcp)
  • guava
  • h2
  • hsqldb
  • httpclient
  • imageio-ext
  • jackson-annotations
  • jackson-core
  • jackson-databind
  • jai_core/codec
  • jai_imageio
  • jaiext
  • jts
  • log4j-1.2-api
  • log4j-api
  • log4j-core
  • log4j-jcl
  • log4j-jul
  • log4j-slf4j2-impl
  • ojdbc14
  • postgresql
  • slf4j-api

[aaime]

Thinking out loud here... what about the cloud connection libraries? azure/s3/google
They are also spread out across different projects (imageio-ext, gwc, possibly geoserver) and could use a BOM.

[groldan]

Good point but I'd like to close this one as scoped for the geotools bom and see about that separately if you don't mind, it's taken too long already. The cog libraries are actually more related to sharing them across imageio-ext and geowebcache and geotools itself, so not sure where to tackle it

[groldan]

Aside, it looks like we'll be adding PMTiles support as a datastore, like in the mbtiles store community module, and that'll require file/http/s3/azure range readers, so I'd like to leverage some synergies there too

[groldan]

I would like to merge this PR and tackle the concern raised in this comment as a separate issue, for which I've created this ticket: https://osgeo-org.atlassian.net/browse/GEOT-7777

[groldan]

Downstream QA Build PR ready: geotools/geotools#5246

[jodygarnett]

Thanks!