feat: strings context management

[yevheniyJ]

• crowdin context download
• crowdin context upload
• crowdin context reset
• crowdin context status

[codecov]

Codecov Report

❌ Patch coverage is 63.31658% with 146 lines in your changes missing coverage. Please review.
✅ Project coverage is 65.96%. Comparing base (9243204) to head (dcfbdde).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...wdin/cli/commands/actions/ContextStatusAction.java	68.97%	19 Missing and 8 partials ⚠️
...owdin/cli/commands/actions/ContextResetAction.java	62.13%	17 Missing and 8 partials ⚠️
...main/java/com/crowdin/cli/utils/AiContextUtil.java	40.00%	21 Missing and 3 partials ⚠️
...in/cli/commands/actions/ContextDownloadAction.java	73.81%	12 Missing and 10 partials ⚠️
...n/cli/commands/picocli/ContextResetSubcommand.java	35.30%	4 Missing and 7 partials ⚠️
...a/com/crowdin/cli/client/CrowdinProjectClient.java	9.10%	10 Missing ⚠️
...rc/main/java/com/crowdin/cli/utils/StringUtil.java	25.00%	8 Missing and 1 partial ⚠️
.../cli/commands/picocli/ContextStatusSubcommand.java	45.46%	4 Missing and 2 partials ⚠️
...a/com/crowdin/cli/commands/actions/CliActions.java	0.00%	4 Missing ⚠️
...wdin/cli/commands/actions/ContextUploadAction.java	90.00%	1 Missing and 2 partials ⚠️
... and 3 more

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #987      +/-   ##
============================================
+ Coverage     65.26%   65.96%   +0.71%     
- Complexity     1679     1785     +106     
============================================
  Files           244      255      +11     
  Lines          6887     7455     +568     
  Branches       1047     1162     +115     
============================================
+ Hits           4494     4917     +423     
- Misses         1795     1898     +103     
- Partials        598      640      +42     

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