[mono][interp] Implement tiering within the interpreter

[BrzVlad]

A considerable amount of time during application startup (double digit percentages) is spent compiling the managed methods with the interpreter. Inlining and other optimization passes are responsible for a big chunk of time spent compiling methods. Disabling these optimizations can decrease the compilation time by over 30%.

We can improve the startup time of applications using interpreter (blazor/maui) by a considerable amount if we first compile methods without any optimizations, tiering them up later during execution.

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Issue Details

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A considerable amount of time during application startup (double digit percentages) is spent compiling the managed methods with the interpreter. Inlining and other optimization passes are responsible for a big chunk of time spent compiling methods. Disabling these optimizations can decrease the compilation time by over 30%.

We can improve the startup time of applications using interpreter (blazor/maui) by a considerable amount if we first compile methods without any optimizations, tiering them up later during execution.

Author:	BrzVlad
Assignees:	BrzVlad
Labels:	area-Codegen-Interpreter-mono
Milestone:	7.0.0

[BrzVlad]

Implemented in #68823