Generate heatmap for linux kernel

Summary:
This diff handles several challenges related to heatmap generation for Linux kernel (vmlinux elf file):
- If the input binary elf file contains the section `__ksymtab`, this diff assumes that this is the linux kernel `vmlinux` file and enables an extra flag `LinuxKernelMode`
- In `LinuxKernelMode`, we only support heat map generation right now, therefore it ensures that current BOLT mode is heat map generation. Otherwise, it exits with error.
- For some Linux symbol and section combinations, BOLT may not be able to find section for symbol (specially symbols that specifies the end of some section). For such cases, we show an warning message without exiting which was the previous behavior.
- Linux kernel elf file does not contain dynamic section, therefore, we don't exit when no dynamic section is found for linux kernel binary.
- Current `ParseMMap` logic does not work with linux kernel. MMap entries for linux kernel uses `PERF_RECORD_MMAP` format instead of typical `PERF_RECORD_MMAP2` format. Since linux kernel address mapping is absolute (same as specified in the ELF file), we avoid calling `ParseMMap` in linux kernel mode.
- Linux kernel entries are registered with PID -1, therefore `BinaryMMapInfo` lookup is not required for linux kernel entries. Similarly, `adjustLBR` is also not required.
- Default max address in linux kernel mode is highest unsigned 64-bit integer instead of current 4GBs.
- Added another new parameter for heatmap, `MinAddress`, in case of Linux kernel mode which is `KernelBaseAddress`, otherwise, it is 0. While registering Heatmap sample counts from LBR entries, any address lower than this `MinAddress` is ignored.
- `IgnoreInterruptLBR` is disabled in linux kernel mode to ensure that kernel entries are processed

Currently, linux kernel heat map also include heat map for Linux kernel modules that are not part of vmlinux elf file. This is intentional to identify other potential optimization opportunities. If reviewers think, those modules should be omitted, I will disable those modules based on highest end address of a vmlinux elf section.

(cherry picked from FBD21992765)