feat: multi instance support

[TobiaszCudnik]

Because

• user can have more than 1 instance of Instill AI

This commit

• adds instance management and switching

Changes

• instances management
  • add, edit, list, remove, set-default
• markdown tables
• tests
• typed config (for hosts)
• default config when empty
• hostname validation
• breaking dependabot updates
• readme

[linear]

INS-1661 CLI: multi-instance support

• add / remove / select a target host
• integrate with auth
  • oauth hostname differs from the API hostname (for the same instance)
• aggregate results from >1 source
  • eg --local --cloud --all
  • ability to select --all as a default

# examin existing instances
$ inst instances list
+--------------+-------------------+-------------------+----------------------------+
| Type         | API Hostname      | Oauth2 Hostname   | Issuer                     |
+--------------+-------------------+-------------------+----------------------------+
| cloud        | api.instill.tech  | auth.instill.tech | https://auth.instill.tech/ |
+--------------+-------------------+-------------------+----------------------------+
| local        | instill.localhost |                   |                            |
+--------------+-------------------+-------------------+----------------------------+

# set the local instance (http)
$ inst instances set local instill.localhost

# set the cloud instance (https)
$ inst instances set cloud api.instill.tech \
		--oauth auth.instill.tech \
		--issuer https://auth.instill.tech/

Later

• support for >1 local instance
• support for >1 cloud instance

[codecov]

Codecov Report

Patch coverage: 54.84% and project coverage change: +0.96% 🎉

Comparison is base (b9e1db9) 50.13% compared to head (f23e835) 51.09%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #178      +/-   ##
==========================================
+ Coverage   50.13%   51.09%   +0.96%     
==========================================
  Files          48       54       +6     
  Lines        3700     4196     +496     
==========================================
+ Hits         1855     2144     +289     
- Misses       1674     1833     +159     
- Partials      171      219      +48     

Flag	Coverage Δ
unittests	51.09% <54.84%> (+0.96%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
internal/config/config_file.go	57.60% <ø> (ø)
internal/config/config_type.go	96.07% <ø> (ø)
pkg/cmd/auth/status/status.go	28.57% <0.00%> (ø)
pkg/cmd/root/help_topic.go	84.61% <ø> (ø)
pkg/cmd/root/root.go	0.00% <0.00%> (ø)
pkg/cmdutil/errors.go	26.31% <ø> (ø)
pkg/cmdutil/output.go	0.00% <0.00%> (ø)
pkg/cmd/auth/login/login.go	42.30% <18.51%> (-2.14%)	⬇️
internal/config/from_file.go	53.17% <33.58%> (-11.27%)	⬇️
pkg/cmd/instances/instances.go	40.74% <40.74%> (ø)
... and 15 more

... and 1 file with indirect coverage changes

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[pinglin]

Please see the comments and suggested changes.

[TobiaszCudnik]

Please see the comments and suggested changes.

@pinglin Ive implemented the renames and formatted imports. Im happy theres no concerns regarding the code itself. We should incorporate goimports into the pipeline.

[pinglin]

Please see the comments and suggested changes.

@pinglin Ive implemented the renames and formatted imports. Im happy theres no concerns regarding the code itself. We should incorporate goimports into the pipeline.

Yeah, that will be very ideal. @praharshjain has proposed and tried it before actually. Any guideline for this?

[TobiaszCudnik]

This seems to be the right source:
https://github.com/dnephin/pre-commit-golang

Import order should be linted, like any other required conventions. AFAIK we're using the default golangci-lint config.

[pinglin]

LGTM