Add bazel8 support.

[bstoll]

This PR updates GNOI to use Bazel8/bzlmod. This change also has makes Gazelle BUILD file generation work, which has resulted in fixing some consistency problems with import_prefix not being applied to all GNOI protos.

This PR is flagged as a draft because it pins openconfig_gnmi, openconfig_gnsi, and openconfig_bootz to my personal git branch. openconfig/gnmi#192 , openconfig/gnsi#220 and openconfig/bootz#147 need to be merged and uploaded to the Bazel Central Registry before this PR can be merged.

[coveralls]

Pull Request Test Coverage Report for Build 12759242402

Details

• 35 of 2648 (1.32%) changed or added relevant lines in 36 files are covered.
• 243 unchanged lines in 19 files lost coverage.
• Overall coverage increased (+0.2%) to 1.308%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
common/common.pb.go	1	4	25.0%
bgp/bgp_grpc.pb.go	0	11	0.0%
factory_reset/factory_reset_grpc.pb.go	0	11	0.0%
bootconfig/bootconfig_grpc.pb.go	0	14	0.0%
debug/debug_grpc.pb.go	0	14	0.0%
otdr/otdr_grpc.pb.go	0	14	0.0%
packet_capture/packet_capture_grpc.pb.go	0	14	0.0%
bootconfig/bootconfig.pb.go	0	16	0.0%
bgp/bgp.pb.go	14	31	45.16%
diag/diag_grpc.pb.go	0	17	0.0%

Files with Coverage Reduction	New Missed Lines	%
common/common.pb.go	1	32.29%
bgp/bgp.pb.go	2	27.78%
debug/debug.pb.go	3	0.0%
bootconfig/bootconfig.pb.go	4	0.0%
factory_reset/factory_reset.pb.go	4	0.0%
types/types.pb.go	4	30.56%
mpls/mpls.pb.go	8	0.0%
otdr/otdr.pb.go	8	0.0%
wavelength_router/wavelength_router.pb.go	10	0.0%
packet_capture/packet_capture.pb.go	10	0.0%

Totals
Change from base Build 12758467056:	0.2%
Covered Lines:	162
Relevant Lines:	12389

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💛 - Coveralls