Solve the package configs conflict

[waruqi]

#5901
#5745

We can use set_policy("package.resolve_depconflict", false) to disable resolve deps conflict

and we can enable package.sync_requires_to_deps policy to sync requires to all deps configs. #5745 (comment)

Merge package configs without conflict automatically

package("foo")
    add_deps("zlib >=1.2.13")
    on_install(function () end)
package_end()

package("bar")
    add_deps("zlib 1.2.x")
    add_deps("boost", {system = false, configs = {lzma = true}})
    on_install(function () end)
package_end()

package("zoo")
    add_deps("boost", {system = false, configs = {zlib = true}})
    on_install(function () end)
package_end()

package("test")
    add_deps("foo", "bar", "zoo")
    on_install(function () end)
package_end()

note: install or modify (m) these packages (pass -y to skip confirm)?
  -> bar latest [from:test]
  -> zoo latest [from:test]
  -> test latest
in xmake-repo:
  -> zlib v1.2.13 [from:foo,bar, license:zlib] (conflict resolved)
  -> boost 1.86.0 [zlib:y, lzma:y, from:bar,zoo, license:BSL-1.0] (conflict resolved)
please input: y (y/n/m)

Unresolvable package configuration conflict

package("bar")
    add_deps("boost", {system = false, configs = {zlib = false}})
    on_install(function () end)
package_end()

package("zoo")
    add_deps("boost", {system = false, configs = {zlib = true}})
    on_install(function () end)
package_end()

package(test): add_deps(boost, ...)
  -> boost 1.86.0 [zlib:n, from:bar, license:BSL-1.0]
  -> boost#1 1.86.0 [zlib:y, from:zoo, license:BSL-1.0]
we can use add_requireconfs("**.boost", {override = true, configs = {}}) to override configs.
error: package(boost): conflict configs dependencies!