Aligned Installation framework with UCX project

[nfx]

This pull request introduces several changes to the Installation framework in order to align it with the UCX project. The main changes are the addition of new methods to the Installation class, as well as modifications to the tests in test_installer.py.

In the Installation class, several new methods have been added: load_local, username, remove, workspace_link, workspace_markdown_link, and _host. The load_local method loads an object of a specific type from a local file, while username returns the username associated with the installation. The remove method removes the installation folder from the workspace, and workspace_link and workspace_markdown_link return links to files in the workspace. The _host method returns the host URL for the workspace.

In the test_installer.py file, the tests for the InstallState class have been updated to include a new test for the from_installation method, which creates an InstallState object from an existing Installation object. Additionally, the test_state_corrupt test has been added to test the behavior of the InstallState class when the installation is not found.

Overall, this pull request aims to improve the functionality and robustness of the Installation framework by adding new methods and updating the tests.

Relevant PRs:

• Adopt installation package from databricks-labs-blueprint ucx#860

[codecov]

Codecov Report

Attention: 38 lines in your changes are missing coverage. Please review.

Comparison is base (2f8d21a) 77.95% compared to head (e2ecd49) 77.43%.

Files	Patch %	Lines
src/databricks/labs/blueprint/installation.py	57.64%	34 Missing and 2 partials ⚠️
src/databricks/labs/blueprint/installer.py	83.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #32      +/-   ##
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- Coverage   77.95%   77.43%   -0.53%     
==========================================
  Files          13       13              
  Lines        1175     1232      +57     
  Branches      217      222       +5     
==========================================
+ Hits          916      954      +38     
- Misses        172      190      +18     
- Partials       87       88       +1     

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