fix: yarn/pnpm uninstall removes binary

[josefaidt]

trafficstars

Description of changes

• adds uninstall npm script to run rimraf $HOME/.amplify/bin/amplify to remove local binary when running pnpm uninstall --global @aws-amplify/cli
• modifies amplify uninstall to uninstall using the package manager amplify was called with

removes need for running amplify uninstall; pnpm rm -g @aws-amplify/cli to uninstall

Issue #, if available

#10610

Description of how you validated changes

Checklist

• [x] PR description included
• [x] yarn test passes
• [x] Tests are changed or added
• [ ] Relevant documentation is changed or added (and PR referenced)
• [ ] New AWS SDK calls or CloudFormation actions have been added to relevant test and service IAM policies
• [ ] Pull request labels are added

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[josefaidt]

I'm not too sure where to add tests for this but happy to add them

[codecov-commenter]

Codecov Report

Merging #12292 (e2497b0) into dev (984c0f8) will decrease coverage by 2.37%. The diff coverage is 55.66%.

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@@            Coverage Diff             @@
##              dev   #12292      +/-   ##
==========================================
- Coverage   49.45%   47.08%   -2.37%     
==========================================
  Files         692      836     +144     
  Lines       33424    38030    +4606     
  Branches     6840     7712     +872     
==========================================
+ Hits        16529    17908    +1379     
- Misses      15370    18484    +3114     
- Partials     1525     1638     +113     

Impacted Files	Coverage Δ
...mplify-appsync-simulator/src/resolvers/function.ts	15.38% <ø> (ø)
...s/amplify-appsync-simulator/src/type-definition.ts	100.00% <ø> (ø)
...sync-simulator/src/velocity/util/dynamodb-utils.ts	6.55% <0.00%> (ø)
...y-appsync-simulator/src/velocity/util/map-utils.ts	10.00% <ø> (ø)
...tor/src/velocity/util/transform/dynamodb-filter.ts	4.93% <0.00%> (ø)
...appsync-simulator/src/velocity/value-mapper/map.ts	86.88% <ø> (ø)
...ackages/amplify-category-auth/src/commands/auth.ts	0.00% <0.00%> (ø)
...es/amplify-category-auth/src/commands/auth/help.ts	0.00% <0.00%> (ø)
.../amplify-category-auth/src/commands/auth/import.ts	0.00% <0.00%> (ø)
...dformation/auth-inputs-manager/auth-input-state.ts	46.93% <0.00%> (ø)
... and 101 more

... and 458 files with indirect coverage changes

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