Bug fixes

• #2019 fix bit import --merge to not override changed dependencies
• #2023 better handle external errors from compilers
• #2013 fix bit import when one module resolution alias is a directory of another alias for extensions other than .js
• #2033 improve bit link to build unrecognized missing links
• #2035 fix "unable to manually add the dependency" error when package.json of an imported component is missing
• #2034 make sure versions are not deleted upon tag when components have cycle dependencies and a version is specified
• #2027 fix ComponentNotFound error when building a typescript component and its Bit dependency is installed as a package
• #2011 update dependents package.json files when ejecting dependencies
• fix bit graph edge colouring for regular dependencies
• call pre and post export hooks actions