Override Min/Max zoom in WMTS endpoint

[vincentsarago]

ref: stac-utils/titiler-pgstac#272

With the change introduced in 1.0, users can't overwrite the min/max zoom (for specific or all TMS).

we could introduce a specific query-parameter for this but do we want to set min/max zoom for all the TMS of per TMS

• /WMTSCapabilities.xml?minzoom=0&maxzoom=10
• /WMTSCapabilities.xml?minzoom=WebMercatorQuad::0&maxzoom=WebMercatorQuad::10