Added error when cluster reset while using server flag

[vitorsavian]

Proposed Changes

Handle when the user tries to --cluster-reset when using the --server flag

Types of Changes

Handling Error

Verification

k3s server --server 11.22.33.44 --cluster-reset

Testing

Linked Issues

• The server flag should be skipped or present an error during a cluster-reset #8488
• The server flag should be skipped or present an error during a cluster-reset  rancher/rke2#3178

User-Facing Change

The user will receive a error when --cluster-reset with the --server flag

Further Comments

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (cae8b2b) 44.66% compared to head (9dd5f71) 51.50%.
Report is 11 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8385      +/-   ##
==========================================
+ Coverage   44.66%   51.50%   +6.83%     
==========================================
  Files         143      143              
  Lines       14746    15232     +486     
==========================================
+ Hits         6587     7845    +1258     
+ Misses       7119     6168     -951     
- Partials     1040     1219     +179     

Flag	Coverage Δ
e2etests	48.72% <84.61%> (?)
inttests	44.77% <50.00%> (+2.81%)	⬆️
unittests	19.84% <33.33%> (+0.01%)	⬆️

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

Files	Coverage Δ
pkg/daemons/executor/executor.go	57.81% <ø> (ø)
pkg/etcd/etcd.go	44.88% <100.00%> (+9.20%)	⬆️
pkg/cli/server/server.go	59.25% <0.00%> (+4.39%)	⬆️

... and 48 files with indirect coverage changes

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